Answer:
B. biomass
Explanation:
Why are cyanobacteria important to early Earth?
A. Cyanobacteria stopped the formation of rust in Earth's crust
B. Cyanobacteria preceded the first photosynthetic organisms
C. Cyanobacteria are the first photosynthetic organisms
D. Cyanobacteria produced iron in Earth's crust
Answer:
Cyanobacteria played an important role in the evolution of Early Earth and the biosphere. They are responsible for the oxygenation of the atmosphere and oceans since the Great Oxidation Event around 2.4 Ga, debatably earlier.
Explanation:
hope it helps.
Which of the following is not a feature of an enzyme? Select an answer and submit.
A. It accelerates a chemical reaction without itself being affected by the reaction.
B. It controls chemical reactions within living systems.
C. It elevates the amount of activation energy required.
D. It is substrate-specific.
E. It possesses a unique three-dimensional molecular shape.
F. Names usually end in ase.
G. Each has an optimal temperature at which they react more rapidly.
which statement best describes the composition of diatom shells?
They are smaller boxes with lids, composed of silica
They have two sets of grooves that contain flagella
They are box like structures, composed of cellulose
The shell is a flexible pellicle that can change shape
The covering is a calcium shell called a test
They are like small boxed with lids composed of silica statement best describes the composition of diatom shells.
Option A is correct.
How do diatom shells work?Diatoms are a kind of freshwater green growth with siliceous shells (made of silica). They live in "glass houses" literally. A diatom's shell is made up of two sections that are different sizes and can be wedge- or round-shaped.
What purpose do diatom shells serve?The natural material of diatom shells, which are made of silicon dioxide and can theoretically be made in any quantity, has regular patterns of pores that penetrate their surface. Diatom shells have the potential to be utilized as low-cost, highly effective drug carriers, sensor devices, or other microdevices due to their characteristics.
Question incomplete:
which statement best describes the composition of diatom shells?
A. They are smaller boxes with lids, composed of silica
B. They have two sets of grooves that contain flagella
C. They are box like structures, composed of cellulose
D. The shell is a flexible pellicle that can change shape
E.The covering is a calcium shell called a test
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Having multiple crossovers between two genes that are far apart, and that result in the original arrangement being passed on, cause what?
A) Underestimation of distance between genes
B) No change to distance calculations
Answer:
A) Underestimation of distance between genes.
Explanation:
Multiple crossovers between two genes that are far apart, and that result in the original arrangement being passed on, can cause underestimation of the distance between the genes. This is because the frequency of multiple crossovers decreases as the distance between the genes increases, producing fewer recombinants. As a result, the distance between the genes appears shorter than it actually is, leading to an underestimation of the genetic map distance.
The correct answer is A) Underestimation of the distance between genes. Having multiple crossovers between two genes that are far apart can result in the original arrangement of alleles being restored. This phenomenon, known as double crossovers, can lead to an underestimation of the distance between two genes.
What is meant by double crossover?Double crossovers are a type of genetic recombination event that occurs during meiosis, the process by which cells divide to form gametes. During meiosis, homologous chromosomes exchange genetic material through a process called crossing-over, which results in the formation of recombinant chromosomes.
When can double crossover occur?Double crossovers occur when two or more crossovers happen between two loci that are far apart from each other. If two crossovers occur, the exchange of genetic material between the homologous chromosomes can result in the original parental arrangement of alleles being restored.
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Write the number of offspring plants with each phenotype in the Offspring Phenotype columns. Also, make sure you have run enough trials that you can both determine the genotype of each parent plant and produce yellow and white-flowered plants.
Summarize your work on the next page.
A cross between a dihybrid individual (heterozygous for two traits) and a homozygous recessive individual for the same two traits produces these phenotypes as offspring: parental phenotypes 526 and 542, and recombinant phenotypes 22 and 24.
A. these genes are not linked
B. these genes are on different chromosomes
C. these genes are linked
D. these genes sort independantly
can someone explain why is it c
The offspring of a dihybrid individual (heterozygous for two traits) crossed with a homozygous recessive individual for the same two traits will produce parental phenotypes 526 and 542, and recombinant phenotypes 22 and 24.
The dihybrid individual will possess two different alleles for each of the two traits, whereas the homozygous recessive individual will possess two recessive alleles for each trait. The parental phenotypes (526 and 542) will have the same alleles as the dihybrid parent, while the recombinant phenotypes (22 and 24) will have one allele from each parent. The offspring will then express the phenotype that is determined by the combination of alleles inherited from the two parents.
What is homozygous recessive trait?
Homozygous recessive trait is a trait that is expressed when an organism has two identical recessive alleles for a particular gene. It is the opposite of a homozygous dominant trait, which is expressed when an organism has two identical dominant alleles for the same gene.
In conclusion, the offspring of a dihybrid individual crossed with a homozygous recessive individual will produce parental phenotypes 526 and 542, and recombinant phenotypes 22 and 24.
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Question 4 (2 points)
Jose Marti was a Spanish General fighting against the United States.
O True
O False
Yes, The answer is TRUE :D
How do scientists think Earth's orbit relates to an Ice Age? (2 pol
6. Weathering is the process of rock decomposition.
A. What are four different types of chemical weathering? (4 points)
B. How does each type of weathering break down rocks? (4 points)
Answer:
Scientists think Earth's orbit relates to an Ice Age because the shape of Earth's orbit changes over time. When Earth's orbit becomes more elliptical, it causes more variation in the amount of sunlight Earth receives during different parts of the year. This variation can cause changes in climate, which may lead to an Ice Age.
Types of chemical weathering:
Hydrolysis: water reacts with minerals in the rock to create new minerals that are more susceptible to further weathering.
Oxidation: oxygen reacts with minerals in the rock to form oxides and hydroxides, which can weaken the rock structure.
Carbonation: carbon dioxide reacts with water to form carbonic acid, which can dissolve minerals in the rock, especially those containing calcium.
Acid rain: rainwater that contains pollutants like sulfur dioxide and nitrogen oxides can become acidic and corrode the rock surface.
The above-mentioned types of weathering break down rocks as follows:
Hydrolysis: water breaks down minerals in the rock by reacting with them and creating new minerals.
Oxidation: oxygen reacts with minerals in the rock to create new minerals that are weaker and more susceptible to further weathering.
Carbonation: carbonic acid dissolves minerals in the rock, particularly those containing calcium, leaving the rock structure weaker.
Acid rain: the acidic rainwater reacts with minerals in the rock, dissolving them and weakening the rock structure.
Explanation:
True or False: Developmental scientists find that many parts of the brain, and many strategies for learning, result in early language accomplishments.
True.
Studies have shown that exposure to language in infancy can shape the development of language skills later in life, and that certain regions of the brain are particularly important for language processing.
Factors such as social interaction, environmental stimulation, and genetic predispositions can also influence development in early childhood.
Which of the following would you expect to increase after a forest has been clear-
cut?
Select 2 correct answer(s)
surface temperature
annual precipitation
amount of runoff
amount of transpiration
Amount of runoff and surface temperature would you expect to increase after a forest has been clear-
cutting.
DeforestationThe removal of trees reduces water and nutrient intake and increases runoff, which results in higher concentrations and loads of nitrate (N) and phosphorus (P) in receiving waters after clear-cutting.Deforestation has quantitatively affected the sedimentary and hydrological processes. Runoff growth was primarily caused by increased precipitation and deforestation, and sediment growth was primarily caused by deforestation.In the tropics and throughout the summer in higher latitudes, deforestation is linked to an increase in the daily maximum temperature year-round. In tropical, mid-latitude, and boreal woods, deforestation naturally also raises average daily temperatures.For more information on deforestation kindly visit to
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Which crop is mentioned as declining in some areas due to climate change?
potatoes
rice
wheat
coffee
corn
Both rice and wheat are highlighted as crops that are diminishing in some areas as a result of climate change.
Which crops are impacted by climate change?The yields of some crops may improve as a result of warming temperatures and rising carbon dioxide levels, but yields of important food crops (including corn, rice, and oats) are predicted to be lower than they would be in the absence of climate change. The potential planting boundaries of single- and double-cropping rice production systems have shifted significantly northward as a result of climate change, which has a detrimental effect on the length of time that single-, early-, and late-cropping rice takes to grow. By the end of this decade, corn yields in nearly all of Iowa's counties will be 5% or lower than they would have been in the absence of climate change, according to the simulations. At least 10% of the population will experience declines.To learn more about climate change, refer to:
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Complete the Punnett Squares and answer the analysis questions below.
According to the problem the Genotype: FF: 25%: Ff: 50%: ff: 25% and Phenotype: Black fur: 25% Gray fur: 75%.
What is Genotype?Genotype is the genetic makeup of an organism, which determines its physical characteristics and traits. It is the combination of alleles (variants of a gene) inherited from both parents. Genotype is different from phenotype, which is the observable physical traits of an organism, such as its height, hair color, and eye color.
The male dog is homozygous recessive (ff), meaning that it carries two recessive alleles (f). This results in a 25% chance of producing offspring with two dominant alleles (FF), a 50% chance of producing offspring with one dominant allele and one recessive allele (Ff), and a 25% chance of producing offspring with two recessive alleles (ff).
The phenotype of the offspring will depend on which alleles they inherit. Since the F allele is dominant, if the offspring inherits one F allele, they will have gray fur. If they inherit two f alleles, they will have black fur. Therefore, the possible phenotypes in this case are 25% black fur and 75% gray fur.
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white substance come out when a leaf of poinsettia is torn why?
Explanation: Latex is found within the plant's circulation system. It's not released until there's a broken leaf or the plant is broken in some manner. When the leaves or stems are broken, it releases a milky white substance that can cause a reaction in latex-allergic individuals.
Do the producers in a rainforest affect the climate there?
About 20% of the oxygen we exhale is produced by rainforests, and those who hold a significant quantity of carbon dioxide, thus massively reducing greenhouse gas emissions.
What effects do rainforests have on the climate?Rainforests influence local weather by producing precipitation and regulating temperature. By respiration, which is the function of water moving through a plant and being released into the atmosphere via leaves, stems, and flowers, rainforests contribute to rainfall.
What factors influence the climate in rainforests?Actions in the Jungle, whether natural and human-caused, have the potential to significantly alter the rainforest's contribution to global warming by either directly warming the air or by releasing other greenhouse gases. For instance, logging can compact soil and dry out wetlands, which increases nitrous oxide emissions.
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What percentage represents the reduction of elks due to the reintroduction of wolves to Yellowstone?
10 percent
30 percent
45 percent
50 percent
What is an example of Biology
Answer: the study of birds in ornithology
Explanation: biology is the study of something , such as birds .
here's an example of biology:
Photosynthesis is a biological process that occurs in plants and other photosynthetic organisms. It involves the conversion of light energy from the sun into chemical energy that is stored in glucose and other organic molecules.
Hope this helps!
Brainliest and a like is much appreciated!
LOW ENERGY 5 10 15 20 25 HIGH ENERGY 25 5 Top Bar of Chocolate 25 5 25 5 25 5 25 5 25 5 25 5 25 Bottom Bar of Chocolate 25 5
11. A chocolate maker is going to stack two bars of chocolate. The bars of chocolate are the same size and have the same number of molecules. The diagram above shows the chocolate bars now, before they touch each other. Use the information in the diagram to answer the question. How does the temperature of the top chocolate bar compare with the temperature of the bottom chocolate bar now, and what will happen after the bars have been touching for a while?
a. Before the bars touch, the two bars are different temperatures. Once the bars are touching, both kinetic energy and cold energy will transfer between the molecules in the two bars until both bars reach the same temperature, which will be in between their starting temperatures.
b. Before the bars touch, the top bar is cooler than the bottom bar. Once the bars are touching, the bottom bar will transfer kinetic energy to the molecules in the cooler top bar until both bars reach the same temperature, which will be in between their starting temperatures.
c. Before the bars touch, the top bar is hotter than the bottom bar. Once the bars are touching, the top bar will transfer kinetic energy to the molecules in the cooler bottom bar until both bars reach the same temperature, which will be in between their starting temperatures.
d. Before the bars touch, the top bar is hotter than the bottom bar. Once the bars are touching, the cooler bottom bar will gain kinetic energy until the molecules of both bars have an energy of 25, because hotter things increase the temperature of cooler things.
Answer:
b. Before the bars touch, the top bar is cooler than the bottom bar. Once the bars are touching, the bottom bar will transfer kinetic energy to the molecules in the cooler top bar until both bars reach the same temperature, which will be in between their starting temperatures.
Explanation:
What is the role of respiration in living organisms? Responses It transports materials like food and oxygen to the cells. It transports materials like food and oxygen to the cells. It provides the energy needed by cells. It provides the energy needed by cells. It removes the carbon dioxide that is a waste product. It removes the carbon dioxide that is a waste product. It takes in the oxygen that organisms need.
Most living organisms need oxygen to stay alive. Insects need oxygen to reproduce, grow, and make energy from the food they eat. People get the oxygen they need by taking breaths through their mouths and noses into their lungs.
With the help of oxygen, our cells can break down food to make the energy we need to live.
Respiration is important because it gives the body the energy it needs to work. It gives the cells oxygen and lets out carbon dioxide, which is bad for the body. When oxygen gets into the cells, it shatters down the glucose from digested food into energy. Most living organisms need oxygen to stay alive. Insects need oxygen to reproduce, grow, and make energy from the food they eat. People get the oxygen they need by taking breaths through their mouths and noses into their lungs.
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Photosynthesis
and Respiration
After it is labeled, the diagram below will illustrate photosynthesis. Write each of the
following terms on the correct numbered line. Then answer the questions that follow.
Water
Carbon Dioxide
Glucose
Oxygen
Light
Chlorophyll
Answer:
Oxygen, Carbon dioxide, Glucose,Chlorophyll
Officials at Yellowstone were MOST surprised that the reintroduction of the wolves impacted which of the following
species?
elk
fox
coyote
beaver
Answer:
beavers
Explanation:
Today, the park is home to nine beaver colonies, with the promise of more to come, as the reintroduction of wolves continues to astonish biologists with a ripple of direct and indirect consequences throughout the ecosystem. A flourishing beaver population is just one of those consequences, said Smith.
How biotechnology affected animal production
Please help ASAP
Answer:
hear hope this helps
Explanation:
Animal biotechnology has been used to produce genetically modified animals that synthesize therapeutic proteins, have improved growth rates, or are resistant to disease.
Tom would like to really improve his typing skills, but he has soccer practice and rocket club and also likes to play video games with his friends, so he only practices once a week. What does Tom need to do to improve his skills?
In order to improve his typing skills, Tom needs to invest more amount of time for consistent practice.
The correct option is option a.
Computers are a necessity in today's life and a good typing skill can come handy and make one more efficient. One needs a good technique, knowledge of shortcuts and most importantly, lots of practice in order to improve the typing skill.
Since Tom spends a lot of time practicing soccer, participating in the rocket club and playing video games with his friends but he will need to spare more time as he requires more consistent practice in order to improve his typing skills.
Hence, the correct option is option a.
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--The given question is incomplete, the complete question is
"Tom would like to really improve his typing skills, but he has soccer practice and rocket club and also likes to play video games with his friends, so he only practices once a week. What does Tom need to do to improve his skills?
a. invest more time in consistent practice
b. learn more shortcuts
c. get a better keyboard
d. quit all his other activities"--
five reasons why a case-based learning activity can be an excellent option for teaching ecosystem functioning and explain
Case-based learning activities provide students with a real-world context for understanding the concepts of ecosystem functioning. This helps to bring the material to life in a way that is more engaging and meaningful than traditional lectures.
The other four reasons are as followsA case-based learning activity is an excellent way to teach students about ecosystem functioning. Through the use of real-world contexts, tailored learning styles, critical thinking skills, and problem-solving opportunities, students can gain a deeper understanding of the intricacies of an ecosystem.
Case-based learning activities can be tailored to each student’s individual learning style. This allows students to better understand the material in a way that works best for them.Learn more about Case-based learning here:
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Mathematical representations to predict how energy, biomass and number pyramids respond to change in environmental conditions
To predict how these pyramids respond to changes in environmental conditions, we can use mathematical models that describe the interactions between organisms and their environment.
What is the application of Mathematical representations to predict how energy, biomass and number pyramids respond to change in environmental conditions?Mathematical representations can be used to predict how energy, biomass, and number pyramids respond to changes in environmental conditions by applying ecological models that describe the relationships between organisms and their environment.
Energy pyramids represent the flow of energy through a food chain or ecosystem, with producers at the bottom and higher trophic levels at the top. Biomass pyramids represent the total biomass or weight of all organisms in each trophic level, and number pyramids represent the total number of individuals in each trophic level.
Overall, mathematical representations are useful tools for predicting and understanding how ecological systems respond to changes in environmental conditions. They can help inform conservation and management strategies to maintain healthy and sustainable ecosystems.
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In humans, Albinism (being an Albino) is a recessive trait. What are ALL of the possible genotypes and
phenotypes of the parents for an offspring to be born albino? (Hint: You may need to draw out different
possible scenarios using Punnett Squares).
Answer:
To have an albino offspring, both parents must be carriers of the recessive gene for albinism. Therefore, the possible genotypes for the parents are:
AA (not a carrier) x aa (carrier)
aa (carrier) x AA (not a carrier)
Aa (carrier) x Aa (carrier)
Using Punnett squares to determine the possible offspring:
AA x aa: all offspring will be Aa carriers (phenotype: not albino)
aa x AA: all offspring will be Aa carriers (phenotype: not albino)
Aa x Aa: 25% of offspring will be aa (phenotype: albino), 50% will be Aa carriers (phenotype: not albino but carrying the gene), and 25% will be AA (phenotype: not albino)
Therefore, the only scenario where an offspring can be born albino is if both parents are carriers (Aa) and they have a child with the genotype aa.
Based on his pea-plant data, which three conclusions did mendel reach
Recessive alleles are hidden by dominant alleles. During reproduction, parents transmit some sort of element to their offspring. An each gene's alleles are inherited separately from one another.
What did Mendel conclude from his research with peas?Mendel presented the findings of his research with around 30,000 pea plants to the neighbourhood Natural History Society in 1865. He proved that qualities are faithfully passed on from parents to children in dominant and recessive patterns, regardless of other traits.
What is Mendel's law of inheritance's conclusion?Mendel came to the conclusion that there is no correlation between distinct qualities; they are all inherited independently of one another. This indicates that the inheritance patterns of one feature will not alter those of another.
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Circle which of the following genotypes will display the codominant phenotype:
Homozygous dominant
Heterozygous
Homozygous recessive
Answer:
Heterozygous
Explanation:
Option B. The option that would be circled is Heterozygous. Hence The Heterozygous will display the codominant phenotype.
What is the heterozygous genotypes?The term "heterozygous genotype" refers to a genetic condition in which an individual carries two different versions (or alleles) of a particular gene on their pair of homologous chromosomes. One allele is inherited from the individual's mother and the other allele is inherited from the individual's father.
The term "heterozygous" is used to contrast with "homozygous," which refers to a genetic condition in which an individual carries two copies of the same allele for a particular gene.
For example, if the gene for eye color has two alleles, one for brown eyes and one for blue eyes, an individual with one brown-eyed allele and one blue-eyed allele would be considered heterozygous for that gene. Their genotype would be written as Bb, where B represents the dominant allele for brown eyes and b represents the recessive allele for blue eyes.
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Which of these is would BEST indicate a patient has a problem as a result of inadequate breathing
The building is being help up by cells, how?
The smallest unit of life, cells serve as the basic building blocks for all living things. Living organisms' growth, development, and functionality are all governed by their cells.
How cells are crucial in the building blocks of all living organisms?They may carry out a range of tasks because they are made up of several organelles, including the nucleus, mitochondria, endoplasmic reticulum, the Golgi apparatus, and other parts. The synthesis of proteins and other molecules necessary for the operation of the organism, as well as the creation of energy and the storage of nutrients, all take place within the cells. Moreover, cells enable communication between various components of the organism, allowing it to react to its surroundings.
Why do mitochondria exist?Eukaryotic cells contain organelles called mitochondria, which are the sites of cellular respiration and generate ATP as a type of energy. Mitochondria are organelles found in the cells of eukaryotes, which are organisms whose cells contain a nucleus and other organelles surrounded by a membrane. Mitochondria are the powerhouses of the cell, responsible for producing energy in the form of adenosine triphosphate (ATP). They do this through a process called cellular respiration, in which glucose is broken down with oxygen to produce ATP. ATP is then used to power a variety of cellular processes such as muscle contraction, protein synthesis, and cell signaling. In addition to producing energy, mitochondria also play a role in other cellular processes such as calcium signaling, apoptosis, and cell metabolism.
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In a population of adult giraffes the frequency of individuals with AA genotype is 0.64 Calculate tge frequency of individuals with Aa genotype ?