How was the earths biosphere affected during the Precambrian era
Answer:
Some three billion years ago, the Earth's atmosphere was virtually devoid of oxygen. At about 2.4 billion years ago, oxygen was released from the seas as a byproduct of photosynthesis by cyanobacteria. Levels of the gas gradually climbed, reaching about one percent around two billion years ago.
Explanation:
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which word means that an organism's cells specialize and change during their lifetimes?
answers choices: grow, evovle, shrink, develop
Why do human wanna live ?
Answer:
Explanation:
because there are people who love us, and people we love back. and we want to find out things, and learn, and become able to do things that we would like to do. we live bcz our family want us to live our life and we want them to live along with us. and to make them feel happy We live because we have hope, that tomorrow will be better and want to see what happens next in future
How does energy flow through a system?
Answer:
In general, energy flows from the Sun to producers and then to consumers. The path is linear as the energy present in one step is transferred to the next. You can find specific examples of this pathway in an ecosystem. ... Energy may be lost in living systems as it flows through them
Explanation:
Is water renewable or non-renewable?
yes or no?
explain:
Answer: yes.
Explanation: Non-renewable resources can be depleted and cannot be replenished. Water is a natural resource which is not only found on the surface of the earth in rivers, oceans, lakes, and streams but also underground. Water is a renewable resource.
What new rock formations did you see when the landscape was only exposed to energy from Earth's interior?
Answer:
They become igneous rock and then sedimentary rocks
The rocks firms through the different source of energy such as those that form by fire are igneous rocks The rocks that term by the energy of the sun are sedimentary rocks.
The rocks that are formed by the accumulation of distinct heat and pressure within the earth are known as metamorphic rocks.The rocks that come out when the lands are exposed to energy that comes from the interior of the earth are igneous rocks and sedimentary rocks.Learn more about the rock formations did you see when the landscape.
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What does it mean to say that a microscope does NOT have a resolution less than 200 nanometers?
A.
The microscope has a magnification of 200 nanometers.
B.
The microscope can only distinguish between two objects that are 200 nanometers or more apart.
C.
The microscope can only distinguish between two objects whose light and dark areas differ in intensity by 200 nanometers.
D.
The microscope can only be used to examine specimens that are 200 nanometers or smaller.
Answer:
B..........................
Explanation:
How is the purple stem trait variation similar to the tongue-rolling trait variation?
Explanation:
Species
A group of organisms that can reproduce and produce fertile offspring (children that can reproduce themselves)
Trait
Characteristic of an organism (body part, behavior, chemical, produced)
Variation
Differences in trait expression
Inherited trait
Trait passed from parent to children (offspring)
Acquired Trait
Traits learned by/changed in an individual from interaction with the environment
Protein
A special type of biological molecule (only found in organisms) that organisms use to build, maintain, and operate the cells/tissues/organs of their bodies. (Like a prepared meal)
DNA
The biological molecule that serves as the chemical instructions or blueprints for building all the proteins an organism needs to build its body and survive. (Like words in a cookbook)
Gene
A section of a DNA molecule that serves as the instructions to build one protein. (Like one recipe in a cookbook)
Chromosomes
Large packages of coiled DNA molecules that are passed from parents to children. (Like different chapters on a cookbook)
Pollen
Flowering plant sperm (male sex cell)
Q1. Of which wavelength of light do carotenoids absorb the greatest percentage?
a)400nm
b)500nm
c)600nm
d)700nm
Answer:
B. it's between 460 and 550 nm which would put 500 almost directly in the middle
Explanation:
The wavelength of light which carotenoids absorb the greatest percentage is:
B)500nmA wavelength of light is the visible light which the human eye can see. These have different wavelengths of which some are longer than the others, such as the infrared and the ultraviolet rays
A carotenoid is a type of pigment which are yellowish, orange and red and occurs in plants and algae.
As a result of this, we can see that a wavelength of light which carotenoids absorb the greatest percentage is anywhere between 460-550 nM which would fall under the range of option B
Therefore, the correct answer is option B
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Which of the three traits considered in this film (bipedality, extensive tool use, and large brains) were present in the 3.2-million-year-old Australopithecus fossil (Lucy)?A. Lucy was a bipedal hominid with a brain size similar to that of modern humans, demonstrating that bipedality and larger brains evolved together.B. Stone tools were found in the same rock layer where Lucy was found, showing that members of this species were making and using tools 3.2 million years ago.C. Lucy was a bipedal hominid, and its discover provided evidence that bipedality preceded the evolution of a larger brain size and extensive tool use.D. Lucy had a large brain, but there is no evidence that it used tools or that it walked mostly on two legs.
Answer:
I think the answer is C
Explanation:
C
Lucy was a bipedal hominid, and her discovery provided evidence that bipedality preceded the evolution of larger brain size and extensive tool use.
How important is Lucy's discovery?It is one of the most complete fossils ever found. Because it is a very complete skeleton, compared to the fragments that are usually found, Lucy allowed scientists to better understand human ancestors and study size, shape and locomotion.
Whit this information, we can conclude that Lucy was a bipedal hominid, and her discovery provided evidence that bipedality preceded the evolution of larger brain size and extensive tool use.
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If the process illustrated in the diagram is interrupted by a chemical at point X, there would be an immediate effect on the release of
1) Chlorophyll
(2) carbon dioxide gas
(3) nitrogen gas
(4) oxygen gas
Answer: oxygen
Explanation:
If the process illustrated in the diagram is interrupted by a chemical at point X, there would be an immediate effect on the release of oxygen gas.
What is chloroplast?Photosynthesis, the process by which light energy is transformed to chemical energy and results in the generation of oxygen and energy-rich organic compounds, takes place in the chloroplast, a structure found inside the cells of plants and green algae.
Close relatives of chloroplasts that are free-living are photosynthetic cyanobacteria; according to the endosymbiotic theory, these organisms are the ancestors of both chloroplasts and mitochondria, which are eukaryotic cells' energy-producing organelles.
Therefore, If the process illustrated in the diagram is interrupted by a chemical at point X, there would be an immediate effect on the release of oxygen gas.
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HELP WILL GIVE BRANLIEST AND EXTRA POINTS! (Question 4)
Answer:
a
Explanation:
it has a soft outside
If u know the water cycle please answer this question
Answer:
Gravity
Explanation:
Percolation is the process of a liquid slowly passing through a filter. It's how coffee is usually made. Percolation comes from the Latin word percolare, which means "to strain through." Percolation happens when liquid is strained through a filter, like when someone makes coffee.
Evaporation-the process of turning from liquid into vapor.
Condensation-water which collects as droplets on a cold surface when humid air is in contact with it.
and gravity- Gravity is the force of attraction between two objects, and Earth's gravity pulls matter downward, toward its center. It pulls precipitation down from clouds and pulls water downhill. The warm water near the surface of the ocean heats up with sunlight and evaporates, keeping the water cycle in motion.
A role can be defined as
the enduring behaviors, ideas, attitudes, values, and traditions shared by a group of people and transmitted from one generation to the next.
understood rules for accepted and expected behavior.
feelings that predispose us to respond in a particular way to objects, people, and events.
the set of prescribed behaviors that are associated with a particular social position.
Answer:
The set of prescribed behaviors that are associated with a particular social position.
Explanation:
A role in a society is a behavior that we do as part of our position that we have in that society. There are many roles that we do on a daily basis. These can be gender roles, parental roles, the roles we do at a given job position, and many others. We all know the role of a firefighter because we know what to expect from that role in society.
if you flip a coin 100 times, how many times would you expect to get heads?
Answer:
Well, you expect to get heads 50 times and tails 50 times
Explanation:
1/2 of the coin is heads and 1/2 of the coin is tails
You can expect to get both heads and tails 50 times each
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Which of the following is not a product of cellular respiration?
a. CO2
b. Energy
c. C6H1206
d. H20
Answer:
The only molecule in the group that is not a product of cellular respiration is C₆H₁₂O₆ (option c).
Explanation:
C₆H₁₂O₆ is the glucose molecule, which is an energetic substrate and not a product of cellular respiration.
Cellular respiration is the process by which, through the oxidation of glucose and in the presence of oxygen, energy is obtained in the form of ATP. The reaction that summarizes this process is:
C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + Energy (ATP)↑
As can be seen in the diagram, while glucose and oxygen are substrates of the reaction, the resulting products are CO₂, H₂O and energy.
What causes waves to form....tides pull the water upward but what moves the waves side to side.
A Wind and boats
B Heat and water
C Gravity and Water
D Wind and gravity
hellppppp please will give brainliest
Answer:
B
Explanation:
deciduous Forest...
Name two properties of a good marker and explain why good markers are important.
Answer:
The overview is defined in the clarification section elsewhere here, and according to the particular circumstance.
Explanation:
Including genetic mapping as well as tracing the characteristics of hereditary disorders, genetic markers are valuable.
Basic DNA sequence determination for chromosomes.
Healthy Marker Properties. This needs to have been Polymorphic. It is indeed meant to be non-epistatic. Throughout the genome, these are distributed uniformly.Any genetic element which includes allele, locus, chromosome, or DNA sequence can be readily detected with the help of cytological, molecular or phenotype, techniques, and utilized to follow a segment of chromosome or chromosome during genetic analysis is termed marker.
Two properties of a good marker are:
It should exhibit a high polymorphism level It should be co-dominantGood markers are important for the following reasons:
It can be used to link an inherited disease with its responsible gene It is also significant to study the evolutionary relationships among individualsThus, the significant properties of good markers and their importance are defined.
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My parents jus order the ps5 they just told.me it will be here next weel
Answer:
U IS LUCKY A F
Explanation:
HOPE U ENJOY IT
Answer:
i also have a ps5
Explanation:
the three types of newari guthis
Answer:
newari , ? u nepali or which country ?
Explanation:
There are three really important types of guthi: death guthi, lineage deity guthi, and general worship guthi.
Si guthi related to death rituals
Dewali guthi related to worship of the clan deity
NASA guthi related to music
Explanation;What is the most common method used to count a large species population
Answer:
Sampling
Explanation:
In research terms a sample is a group of people, objects, or items that are taken from a larger population for measurement. The sample should be representative of the population to ensure that we can generalize the findings from the research sample to the population as a whole.
what is the difference between phenotypes and genotypes
Answer:
Phenotype are physical traits a organism can inherit for example color, height, or body features are phenotype. Genotype are genetic traits that can be inherited for example personality, or behavior traits. So the primary difference between phenotype and genotype is that "phenotype are psychical characteristics while genotype is genetic."
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Taking more than recommended levels of protein supplements may lead to all of the following EXCEPT?
A Dehydration
B Over-taxation of the kidneys
C Increased aerobic endurance
D. Increased body fat
why are data tables useful in an experiment?
Answer: By organizing data, a scientist can more easily interpret what has been observed. ... Since most of the data scientist collect is quantitative, data tables and charts are usually used to organize the information. Graphs are created from data tables.
Explanation: Have a blessed day!
A sequence of a DNA template strand is shown.
3’ GGC ACC TTA GCA TTT 5’
Which of the following is the correct amino acid chain produced from the DNA template strand?
a) Proline – Tryptophan – Asparagine – Arginine – Lysine
b) Glycine – Threonine – Leucine – Alanine – Phenylalanine
c) Proline – Serine – Asparagine – Arginine - Phenylalanine
d) Alanine – Threonine – Phenylalanine – Arginine – Lysine
Answer:
A
Explanation:
I took the test and got it right.
The option (A) is correct. Glycine – Threonine – Leucine – Alanine – Phenylalanine
What do you mean by amino acids?Amino acids are organic compounds that contain both amino and carboxylic acid functional groups. Although hundreds of amino acids exist in nature, by far the most important are the alpha-amino acids, which comprise proteins. Only 22 alpha amino acids appear in the genetic code.
Moreover, amino acids are molecules that combine to form proteins. Amino acids and proteins are the building blocks of life. When proteins are digested or broken down, amino acids are left. The human body uses amino acids to make proteins to help the body: Break down food.
Therefore, these 12 amino acids are isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, valine, cysteine, tyrosine, histidine and arginine.
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What is observation used by scientists
Answer:
Scientists use observation to collect and record data, which enables them to construct and then test hypotheses and theories.
Explanation:
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Select the correct answer.
Which land cover type has the least area in United States?
A.
special-use land
B.
crop land
C.
forest-use land
D.
wet land
E.
urban area
Special-use land has the least area in United States. Therefore, the correct statement is option A.
What is special-use land?A special-use land includes areas such as parks, wildlife refuges, and wilderness areas. These areas are important for conservation and recreation as they make a small portion of the total land area in the United States.
Crop land, forest-use land, wetland, and urban area cover larger areas of land than special-use land. According to the National Land Cover Database (NLCD), special-use land covers only 3.3 percent of the total land area of the country which is less than other land cover types such as forest-use land, which covers 34.4% of the country.
Special-use land includes national parks, wildlife refuges, and wilderness areas which are set aside to conserve natural resources, to protect biodiversity, etc.
Therefore, special-use land has the least area in United States.
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Alvin is propelled by ____ hydraulic thrusters and features an electrical system powered by lead-acid batteries. *
Answer:
Alvin is propelled by _gas or diesel___ hydraulic thrusters and features an electrical system powered by lead-acid batteries.
Explanation:
Technically, this implies that Alvin is working on motor-assist mode, using a hybrid engine. Alvin is, therefore, propelled by an internal combustion engine (given the presence of hydraulic thrusters) in addition to an electric motor, which uses energy stored in (lead-acid) batteries. Alvin must be a robot.
What is formed by organized groups of cells with similar structures and a common purpose?
A
organ
00
digestion
С
circulation
D
tissue
Answer:
Cells with similar structures and a common purpose that are organized form a tissue (option D).
Explanation:
Biological tissues are structures originated by the grouping of differentiated cells, which are organized and distributed in such a way that they can fulfill a function in a coordinated way. A characteristic of tissues is that all the cells that constitute them have the same embryonic origin.
An example of a tissue is nervous tissue, formed by neurons, specialized cells that when united form it and fulfill the same function.
The functions of cells are mainly multiplication, development and differentiation, in addition to their ability to group together to form tissues.
The other options are not correct because:
A. Organs are formed from differentiated tissue.
B and C. Digestion and circulation are functions that depend on the organs of the digestive and circulatory systems, respectively.