Technological design is similar to a scientific investigation because both involve raising a question, hypothesis testing and experimental design.
What is the scientific method?The scientific method is a sequential procedure to collect empirical evidence in a scientific investigation, which depends on several sequential steps (i.e. observation, hypothesis, testable predictive outcomes, experimentation and collection of data).
Technological design is similar to a scientific investigation because it also involves raising a question and hypothesis testing, but the first one also implicates the development of creative development to solve this question.
In conclusion, technological design is similar to a scientific investigation because both involve raising a question, hypothesis testing and experimental design.
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Sperm cells that are beginning to develop in a man's testicles today will not be ready to be ejaculated and able to fertilize an ovum for approximately ________ days.
Sperm cells that are beginning to develop in a man's testicles today will not be ready to be ejaculated and able to fertilize an ovum for approximately 68 - 72 Days
Sperm is the male reproductive cell, or gamete, in anisogamous forms of sexual reproduction. Animals produce motile sperm with a tail known as a flagellum, which are known as spermatozoa, while some red algae and fungi produce non-motile sperm cells, known as spermatia.The head of the sperm contains the DNA, which when combined with the egg's DNA, will create a new individual. The tip of the sperm head is the portion called the acrosome, which enables the sperm to penetrate the egg. The midpiece contains the mitochondria which supplies the energy the tail needs to move.to know more about mitochondria click here
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Which of the following best describes prokaryotes and eukaryotes?
Prokaryotes have a nucleus and eukaryotes do not.
Prokaryotes do not have a nucleus; eukaryotes have a nucleus.
Both have membrane-bound structures.
Prokaryotes have membrane-bound structures and eukaryotes have free floating organelles.
Answer:
Prokaryotes do not have a nucleus; eukaryotes have a nucleus.
Explanation:
The generic material of a prokaryotic cell is not in organized form as in eukaryotic cells. They are found in a region called nucleiod or genophore. They also lack membrane bound organelles. Ribosomes are found in both.
Answer:
Prokaryotes do not have a nucleus; eukaryotes have a nucleus.
Explanation:
Water leaving a reservoir behind a dam is often taken from deep layers of the reservoir. Would you expect fish found in a river below a dam in summer to be species that prefer colder or warmer water than fish found in an undammed river? Explain.
Fish that like colder water are more likely to be found in rivers that are below dams.
How do dams impact the number of fish?The construction of a dam on a river can obstruct or delay upstream fish migration, which has the effect of reducing or even eradicating species that depend on longitudinal migrations along the stream continuum at particular times of their life cycles. Dams can provide energy, maintain the security of water, and protect against flooding, but they also pose a major threat to freshwater species. Dams alter fish life cycles and lower their reproductive potential by obstructing their ability to travel along natural routes between spawning and feeding grounds. Rivers below dams are more likely to have fish that prefer colder water.Learn more about the dams with the help of the given link:
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a person appears to have an infected toe. a sample of pus is taken from the toe and examined under a microscope, but no evidence of any kind of cell can be found. what could be causing the infection?
Upon examining the pus from the infected toe, when no evidence of any kinds of cell is found, it can be concluded that the causative microbe is virus.
Pus is a thick, yellow-whitish fluid that can be seen to be accumulated at the site of infection. It is actually the dead white blood cells' debris that accumulate to fight the infection and protect the body from further infection.
Virus are the acellular creatures. These are considered to be living when present inside any living organism. They do not exhibit any properties of a cell, hence are called acellular. This is the reason why virus could be the causing organism for the disease when no cellular organism was found.
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A doctor might give bicarbonate HCO³⁻ to a patient who is breathing very rapidly. What is the doctor assuming about the patient's blood chemistry?
Since the blood is thought to have grown acidic, the patient is given bicarbonate by the doctor.
The pH scale goes from 0 to 14, and it indicates how basic or acidic a solution or mixture is. A pH of 7 or greater is neutral, whereas a pH of 7 or less is acidic.Blood often has a simple flavor. The blood can occasionally produce too much acid, though. Acidosis is the medical term for this. Respiratory acidosis is a particular kind of acidosis. When the respiratory system, more specifically the lungs, fail to evacuate carbon dioxide, respiratory acidosis results. This may be related to a lung condition that makes it difficult to expel carbon dioxide. The blood in particular will have a lower pH due to the excess carbon dioxide in the body. When a person consumes anything that, when broken down, produces acids, it might result in metabolic acidosis.The person's breathing becomes fast due to the presence of acid in the blood. A buffer is introduced when the patient is given bicarbonate. Since bicarbonate is basic, it will aid in neutralizing or balancing the blood's acidity and preventing future issues.Learn more about the acidosis with the help of the given link:
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What invention/process of the industrial revolutions has had the most amplification of anthropogenic impacts on the planet?
The invention/process of the industrial revolutions that had the most amplification of anthropogenic impacts on the planet was that some economists say the major impact was the standard of living for the general population began to increase consistently.
What is Revolution?The Industrial Revolution was the shift to new industrial techniques that took place in Great Britain, continental Europe, and the United States between roughly 1760 and 1820–1840.
The first three industrial revolutions that had an impact on our contemporary civilization are listed above. The steam engine, the age of science and mass production, and the rise of digital technology were three innovations that dramatically altered the world as we knew it.
Therefore, the process of the industrial revolutions that had the most amplification of anthropogenic impacts on the planet was that some economists say the major impact was the standard of living for the general population began to increase consistently.
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different alleles of a single fly gene control white or red eyes. a fruit fly carries one allele for white eyes and one allele for red eyes. this fly is . multiple choice question. a monohybrid pure-breeding inbred a dihybrid
A fruit fly that carries one allele for white eyes and one allele for red eyes is a monohybrid; option A
What are alleles?Alleles are alternate forms of a single gene.
Alleles of a gene may be dominant or recessive.
Dominant alleles control the dominant trait of a particular gene whereas recessive alleles control the recessive trait of a particular gene.
When the same copies on allele are present for a particular gene, the individual is said to be hom0zygous for that trait.
When the different copies on allele are present for a particular gene, the individual is said to be heterozygous for that trait or a monohybrid.
Therefore, the fruit fly is said to be a monohybrid.
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Alligators, turtles, and fish living together in a river
form this (what)
Alligators, turtles, and fish living together in a river form is what is referred to as the aquatic community.
What is a Community?This is defined as the group of people or organisms living together in a particular area and usually have characteristics which are common to one another.
Alligators, turtles, and fish all live in the river form which is referred to as aquatic community. This is because they are found in water and have similar features which makes them well suited for living in this type of area thereby boosting their survival under different types of conditions.
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Considering the role of enzymes in metabolic reactions (see Concept 8.4), explain why vitamins are required in very small amounts in the diet.
Numerous vitamins are precursors to co-enzymes. Co-enzymes and enzymes are used in chemical reactions but are not consumed. Consequently, a huge number of these molecules are not required for the body to function properly.
Are vitamins coenzyme precursors?The B vitamins are the primary vitamins that act as coenzyme precursors. These compounds can exist in both free and bound forms, both of which must first be released in the digestive system by the proper secretory enzymes in order to be used. Vitamins may need particular transport proteins for each vitamin in order to be transported from the digestive tract into the bloodstream, to various cells, and eventually into the cells. The majority of the B vitamin family are transformed into coenzyme forms within the cells, which are necessary for the action of particular enzymes.Learn more about the Coenzyme with the help of the given link:
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Explain how prokaryotes, though small, can be considered giants in their collective impact on Earth and its life.
Prokaryotes can be considered giants in their collective impact on Earth and its life because they play key roles as decomposers.
What is the ecological role of prokaryotic organisms?The ecological role of prokaryotic organisms is fundamental to maintaining diversity levels in nature by allowing the carbon cycle as decomposers of dead higher organisms.
In conclusion, Prokaryotes can be considered giants in their collective impact on Earth and its life because they represent the major part of biomass and play key roles as decomposers.
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Which of the following is defined as combinations of soil particles that vary in size and shape?
a.
clay
b.
aggregates
c.
silt
d.
loam
A student is learning about infections that can occur in the human body. Infections could be caused by viruses, bacteria, and fungus. The student learns about two infections, influenza and ringworm, and creates a table that describes the infections.
Which of the following statements correctly describes Influenza, an infection caused by a virus?
a
Influenza is caused by a fungus, because it is a DNA genome.
b
Influenza is caused by a virus because it is a non-living infectious agent.
c
Influenza is caused by a bacterium because it is a non-living infectious and spreads by spores.
d
Influenza is caused by a virus because it is a living infectious agent that invades a host cell.
Discuss how the concept of time applies to ecological situations and evolutionary changes. Do ecological time and evolutionary time ever overlap? If so, what are some examples?
The concept of time applies to ecological situations and evolutionary changes. Ecological change leads to biological change.
What is ecological time?The time period in which a defined and The unit of a new time scale, called, is a constant number of demographic events (i.e. births + deaths). It is ecological time.
What is evolutionary time ?Time is arithmetic in evolution, with units of equal measure being added constantly. Time is directional in the sense that units are never deleted but are always added. A generating process's time scale may differ from an observation's time scale, and this distinction is critical.
What's the difference between evolutionary time and ecological time ?Ecological time may be tuned to environmental change on time scales other than generations, although evolutionary time is measured in generations. Evolution occurs from one generation to the next, and evolution occurs as generations accumulate over longer time intervals.
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______ are released from axon terminals and are detected by protein receptors on an adjacent neuron.
Neurotransmitters are released from axon terminals and are detected by protein receptors on an adjacent neuron.
At a chemical synapse, one neuron releases neurotransmitter molecules right into a small area that is adjoining to every other neuron. The neurotransmitters are contained inside small sacs known as synaptic vesicles and are launched into the synaptic cleft with the aid of exocytosis.
Neurotransmitters are launched from synaptic vesicles in presynaptic neurons in response to neural activity, diffuse across the synaptic cleft, and bind unique receptors if you want to result in modifications in postsynaptic neurons.
Neuronconnect with other cells inside the frame including different neurons, muscle cells, and organs. those connections arise at junctions known as synapses. The synapses allow electrical and chemical messages to be transmitted from the neuron to the alternative cells in the body.
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In the deserts of the southwestern United States, the soils are mostly sandy, with occasional large regions of black rock derived from lava flows that occurred 1.7 million years ago. Mice are found in both sandy and rocky areas, and owls are known predators. What might you expect about coat color in these two mouse populations? Explain. How would you use this ecosystem to further test the camouflage hypothesis?
In the deserts of the southwestern United States, the soils are mostly sandy, with occasional large regions of black rock derived from lava flows that occurred 1.7 million years ago. Mice are found in both sandy and rocky areas, and owls are known predators.
What might you expect about coat color in these two mouse populations? Explain.
How would you use this ecosystem to further test the camouflage hypothesis?
Based on the coloration of the mice, you might expect mice that live on sandy soil to be lighter and those that live on lava rock to be much darker. And in fact, scientists have found and predict that each color of mouse would be less hunted in its natural environment than in another environment. You can repeat Hoekstra's experiment with colored models painted to resemble these two types of mice. Or you could try transplanting a portion of each population into its non-native habitat rather than a different habitat. In a live mouse transplant experiment, you would have to make controls to remove the variable introduced by the transplanted mice in new, unfamiliar territory. You could control the transplant process by transplanting some dark mice from one lava rock area to a distant one, and some light mice from one sandy soil area to a distant area.
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Most of the soil in the southwestern United States' deserts is sandy, however there are occasionally sizable areas of black rock made of lava flows that happened 1.7 million years ago. Both rocky and sandy environments contain mice, and owls are well-known mice hunters.
How would you utilise this environment to expand on the notion of camouflage?You may anticipate that mice living on lava rock would be lot darker and those living on sandy soil would be much lighter based on the colours of the mice.In actuality, scientists have discovered and predicted that each colour of mouse will be pursued less frequently in its native environment than in another area.Hoekstra's experiment may be repeated using coloured models that have been painted to mimic these two varieties of mouse.You would need to create controls in a live mouse transplant experiment to eliminate the variable that the transplanted mice introduced in their new environment.To learn more about Hoekstra's experiment, refer to:
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The cell membrane is _______ (or selectively permiable), meaning it controls the passage of molecules in and out of the cell.
Answer: The answer is semipermeable
The cell membrane is also a phospholipid bilayer
Explanation:
disadvantage of organic fertilizer
Answer:
See below.
Explanation:
Organic fertilizer is more environmentally friendly and economical, but it comes at a different cost. These fertilizers are both harder to obtain and take more effort to formulate. Furthermore, these products are not created equally, meaning some of them may not work as well and have inconsistencies. Correspondingly, they are also lower in nutrients, meaning crops that rely on fertilizer will not grow as effectively and risk dying.
What result would Jost have obtained if female development also required a signal from the gonad?
The result Jost has obtained if female development also required a signal from the gonad is that the female genitalia was reliant upon the signs from embryonic gonadal cells.
In females, the ovaries (one of the interior genitalia) are the gonads, while on account of males, the testicles (one of the outer genitalia) are the gonads.
The exploratory investigation of Jost proposed that signs from the embryonic male gonad cells are fundamental for the arrangement of male genitalia, and the shortfall of these signs brought about the development of female genitalia.
The development of female genitalia was reliant upon the hormonal signs of the female embryonic testicle. Then, at that point, it would have been seen that none of the exploratory incipient organisms (in which the medical procedure of gonadal cell has been performed) would grow fundamentally or practically typical genitalia.
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The rattlesnake alerts enemies to its presence with a rattle-a set of modified scales at the tip of its tail. Describe the distinct roles of gated ion channels in initiating and moving a signal along the nerve from the snake's head to its tail and then from that nerve to the muscle that shakes the rattle.
Neurotransmitters activate gated ion channels, which allow molecules (Na+ and K+) to diffuse information and leave the axon. This generates the membrane potential, which depolarizes the axon and sends a signal until it reaches and activates the muscle.
What are Neurotransmitters?Neurotransmitters are chemical messengers that travel throughout the body. Their function is to send signals from nerve cells to target cells.
These target cells could be found in muscles, glands, or nerves. The nervous system contains neurotransmitters.
Gated ion channels is opened by neurotransmitters, allowing molecules (Na+ and K+) to diffuse and exit the axon.
The membrane potential is generated, which depolarizes the axon as well as transmits a signal till it attains and activates the muscle.
Thus, this is the distinct roles of gated ion channels in initiating and moving a signal.
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Can someone help me with question d) please xx
Answer:
0.259
because yes so how's yours day been huhh well hopes well so yeh
Made up of simple sugars called monosaccarides
Answer:
Disaccarides or Polysaccharides
Explanation:
Monosaccarides are the simplest form or units that forms the disaccarides or polysaccharides. When two monosaccarides are linked together, they form di. And when 3 or more mono are linked together, they form poly.
When you hold your breath, which of the following blood gas changes first leads to the urge to breathe? a. rising O₂ c. rising CO₂ b. falling O₂ d. falling CO₂
According to the given statement Rising CO₂ of the following blood gas changes first leads to the urge to breathe.
The correct option is C.
What is determined by blood gas?Blood gases are used to evaluate the levels of oxygen and carbon dioxide in your blood.. They also calculate the pH of your blood.
What occurs when blood gas levels are extreme?When blood levels of carbon dioxide rise, the carbon dioxide dissolves and produces an acid. Your body may be unable to effectively eliminate carbon dioxide if your blood acid level is out of balance. This could occur if your kidneys are unable to eliminate the acid or if your lungs aren't functioning properly.
Is a blood gas test painful?Most people experience a brief moment of acute pain as the needle used to draw blood enters the artery. You might not feel the needle puncture at all if you receive a local anesthetic. As the needle penetrates the skin, you can also experience a momentary sting or pinch.
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genes that play a role in development may influence four major cellular processes. these include cell , cell , cell , and cell
The four major cellular processes that are influenced by genes that play a role in development are – cell division, cell migration, cell differentiation and cell death.
Cell division is a cellular process where the parent or mother cell gets divided into two or more daughter cells. Two distinct cell division processes are meiosis and mitosis.
Cell migration is a multifaceted and an evolutionary conserved cellular process responsible for the development and maintenance of organisms. It allows individual cells and cell groups to change positions, move and build and maintain tissues and organs for homeostasis, embryonic development and regeneration.
Cell differentiation is a cellular process caused by changes in the gene expression due to which the dividing cells alters its phenotypical or functional type.
Cell death is an essential cellular process where all the unwanted cells are removed by a programmed process known as apoptosis.
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Describe the relationship between pH and acidity. (See Concept 3.3.) Overall, is the precipitation in this forest becoming more acidic or less acidic?
Acid rain has a pH of approximately 4.3 because of the elements present. The precipitation in the given forest is becoming more acidic since the pH is 4.0.
A pH scale is used to assess acidity and alkalinity, with 7.0 representing neutrality. A substance's pH scales from 0 to 14, with 0 being the most acidic and greater than 7 being alkaline. A regular rain has a pH of around 5.6, making it mildly acidic due to the dissolution of carbon dioxide (CO2) into water to create weak carbonic acid. The pH of acid rain typically ranges from 4.2 to 4.4.
Any type of precipitation that contains acidic elements, such as sulfuric or nitric acid, that falls to the ground in wet or dry forms from the atmosphere is referred to as acid rain, also known as acid deposition. This can apply to rain, snow, fog, hail, and even corrosive dust.
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there is a volcanic island with a single population of mice that covers the island. a volcanic eruption occurs and splits the original population in two (a1 and a2). you had collected samples of dna from the original population a prior to the eruption, as well as the two populations that resulted after the volcanic eruption. your descendants have fortunately inherited your fascination with rodent genetics. fifty thousand years after the original volcanic eruption, your descendants return to the island and repeat the same sampling and dna sequencing strategy.
Low variation. The more time that passes, the extra the wide variety of gathered series differences among two populations. within populations it's miles much more likely that genetic variation in DNA sequences can have quite low variability.
DNA sequencing is the system of identifying the nucleic acid series the order of nucleotides in DNA. It consists of any technique or era that is used to decide the order of the 4 bases: adenine, guanine, cytosine, and thymine.
Each strand is made from a chain of 4 nucleotides, A, C, G, and T. The order of the nucleotide collection encodes genetic facts. since the nucleotides pair in a predictable manner A with T, and C with G each strand of the DNA is generally complementary to the other.
DNA sequencing refers to the overall laboratory technique for figuring out the exact collection of nucleotides, or bases, in a DNA molecule. The sequence of the bases (often cited by way of the use of the primary letters of their chemical names: A, T, C, and G) encodes the organic records that cells use to expand and operate.
Disclaimer:- your question is incomplete, please see below for complete question.
There is a volcanic island with a single population of mice that covers the island. A volcanic eruption occurs and splits the original population in two (A1 and A2). You had collected samples of DNA from the original population A prior to the eruption, as well as the two populations that resulted after the volcanic eruption. Your descendants have fortunately inherited your fascination with rodent genetics. Fifty thousand years after the original volcanic eruption, your descendants return to the island and repeat the same sampling and DNA sequencing strategy. Your and your descendants' data indicate that members of population A1 are capable of breeding with members of A2 and producing viable, fertile A1-A2 hybrid offspring. Compare the DNA sequences presented above and select the level of variation expected between two randomly chosen individuals of population A1.
A. low variation
B. high variation
C. moderate variation
D. low variation
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with respect to the organization of the nervous system, voluntary is to as involuntary is to .
Concerning the organization of the nervous system, voluntary is to as involuntary is to... refers to the autonomic nervous system.
What is the autonomic nervous system?The autonomic nervous system is part of the peripheral nervous system, this system is the one that will control the involuntary functions of the organs (heart rate, breathing, dilation of the pupils). It is divided into two parts: the sympathetic nervous system, which is in charge of fight and flight functions such as increased heart rate, dilation of the pulmonary bronchi, increased blood pressure, among others; and the parasympathetic nervous system that has functions contrary to those of the sympathetic, such as the decrease in heart rate, contraction of the pupil, stimulation of intestinal peristalsis.
An interplay of the two parts causes there to be a homeostasis in these involuntary reactions in the body.
Therefore, we can confirm that concerning the organization of the nervous system, voluntary is to as involuntary is to... refers to the autonomic nervous system.
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Why are polar molecules important in life
Answer: The significance of molecular polarity to the biological sciences come from two main areas: First, polar molecules tend to become oriented with respect to other molecules. Because of this, polar molecules are important in helping to establish the three-dimensional structure or orientation of other larger molecules.
Explanation:
Answer:
Polar molecules are important in life because they have a positive charge on one end and a negative charge on the other. This means that they attract each other, which is why water has such a strong bond between them. Without polar molecules, there would be no way for water to stick together in order to form ice or snowflakes. Polar molecules also help create the structure of DNA and RNA, which are essential parts of all living things.
Explanation:
a phase i, first-in-human dose-escalation study of amuvatinib, a multi-targeted tyrosine kinase inhibitor, in patients with advanced solid tumors
Amuvatinib is a brand-new tyrosine kinase inhibitor that can be taken orally and has been shown to be effective against mutant KIT, platelet-derived growth factor receptor alpha (PDGFR), and Rad51 in vitro. Amuvatinib was studied in a first-in-human, single-agent, phase I, accelerated titration, dose-escalation experiment in patients with solid tumours that had shown resistant to prior treatments or for which there was no approved treatment (ClinicalTrials.gov identifier: NCT00894894).
What is the result of above study ?With amuvatinib DPC, administered as a single dosage or in divided doses, for 1-6 cycles, there were no observed toxicities at doses up to 1,500 mg/day. No upper limit of tolerability was reached. Serious side effects that were not connected to the medication occurred in five participants. Low and erratic exposure levels were present. One GIST patient who had previously failed imatinib and sunitinib treatment showed a response on 2-[18F]fluoro-2-deoxyglucose positron emission tomography and had clinically stable illness. In a skin punch biopsy performed on days 15 and 29, the Rad51 expression was lower in a second GIST patient.
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_____ is an aliphatic amino acid, but it differs from others because its side chain is bonded to both the _____ and the _____ of the backbone.
Proline is an aliphatic amino acid, but it differs from others because its side chain is bonded to both the nitrogen and the α-carbon of the backbone.
Proline is a secondary amine. Due to its unique structure proline is also known to break the α-helix. Proline is actually an imino acid. The applications of proline can be varying like: in protein synthesis, in wound healing, in immune responses, etc.
An α-carbon is the first carbon to which the functional group is attached, In amino acids, there is a single carbon on which is attached the carboxyl group, the amine group, the hydrogen atom as well as the variable R group.
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(e) What ecological factors and human decisions will influence the actual rise in CO₂ concentration?
The human decisions will influence the actual rise in CO₂ concentration is urban population, burning of fossil fuels like coal and oil.
Rise in CO₂ concentration causes global warming. 85 percentage of all human-produced carbon dioxide emissions come from the burning of fossil fuels like coal, natural gasoline and oil, together with gasoline. The the rest results from the clearing of forests and other land use, in addition to some industrial strategies consisting of cement production.
Carbon dioxide is brought to the environment evidently when organisms respire, carbonate rocks are weathered, forest fires occur, and volcanoes erupt. Carbon dioxide is likewise brought to the surroundings thru human activities, together with the burning of fossil fuels and forests and the production of cement.
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