PLEASE HELP ONLY 2 I CANT GET
1. The graph below shows the change in average beak size of a given bird population. Records indicate that a drought occurred in 1977. Which of the following is the most probable explanation for the observations?
1st Picture
A. A larger beak made it easier to compete for the limited food remaining. In response, the birds grew larger beaks.
B. The seeds available after the drought were large and tough. Working hard to crack those seeds helped the birds grow larger beaks over time.
C. There were only soft seeds available after the drought. More birds chose to develop larger beaks in order to collect and eat the seeds.
D. After the drought, only large seeds were available to eat. Birds with large beaks were better able to crack and eat these seeds.
2. The wing color of a certain species of moth is controlled by alleles at a single locus. Gray (G) is dominant to white (g). A scientist studied a large population of these moths, tracking the frequency of the G allele over time, as shown in the figure below.
2nd Picture
Assuming that the population was in Hardy-Weinberg equilibrium for this gene, what percentage of the moth population was homozygous recessive (gg) in 1975? (2 points)
A. 25%
B. 36%
C. 64%
D. 75%
Answers
From the graph, the possible explanation is that B. The seeds available after the drought were large and tough.
Graph.The information in the graph showed that the beak depth increased after the drought.
In this case, the seeds available after the drought were large and tough and working hard to crack those seeds helped the birds grow larger beaks over time.
Also, the percentage of the moth population was recessive (gg) in 1975 is 25%.
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The increase in bird beak size post-drought is most likely due to natural selection favoring the ability to eat larger seeds. The proportion of moths that are homozygous recessive in 1975 can't be determined without frequency information of the G allele.
Explanation:For the first question, the most probable explanation for the increase in beak size after the drought would be D. After the drought, only large seeds were available to eat. Birds with large beaks were better able to crack and eat these seeds. This scenario describes a classic example of natural selection, where a change in the environment creates a selective pressure that gives an advantage to individuals with certain traits, in this case, larger beaks.
As for the second question, if you're looking for the percentage of the moth population that was homozygous recessive (gg) in 1975, this under the Hardy-Weinberg principle can be calculated using the equation p²+2pq+q²=1, where q² represents the homozygous recessive. Without any given information on the frequency of the G allele, I am unable to accurately generate the percentage.
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Answer:
In science a theory is said to be valid when there is a true scientific consensus, it cannot be judged only based on intuition, faith or authoritarianism of any kind.
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An enzyme includes an organic molecule known as a coenzyme, which enhances the enzyme's function. Coenzymes are organic helper molecules that are typically derived from vitamins. Coenzymes and cofactors, such as metal ions, are essential for the optimal activity of enzymes.
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for example,
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I hope that helps and is correct
Answer:
Explanation:
Unsaturated fatty acids can be monounsaturated or polyunsaturated, monounsaturated fatty acids have one double carbon bond and polyunsaturated fatty acids have more than one double carbon bond. Saturated fatty acids have one single bond. The less carbon bonds, the more carbons the chain has, therefore the more saturated the fatty acid is.
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hope this helps, Brenthall! :-)
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This reflects the relationship of organisms to each other in a habitat, rather than to a small segment like a food chain.
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Thus, this reflects the relationship of organisms to each other in a habitat, rather than to a small segment like a food chain.
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Answer: all the animals in and around the wetlands
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Answer:
Erosion
Explanation:
Clearcutting can destroy an area's ecological integrity in a number of ways, including: the destruction of buffer zones which reduce the severity of flooding by absorbing and holding water; the immediate removal of forest canopy, which destroys the habitat for many rainforest-dependent insects and bacteria; the removal ...
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As a result, rainwater and wind can easily erode the soil, leading to increased sedimentation in nearby streams and rivers, and potentially causing flooding and landslides.
Additionally, the removal of trees can alter the hydrological cycle, as there is less transpiration of water from the leaves and less interception of rainfall, which can lead to changes in streamflow and water availability. Therefore, option A is correct.
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Answer:
With the construction of a shopping center near the habitat of rabbits, there will be a significant decrease in the population because food resources and in general the ecological niche will be negatively influenced.
The carrying capacity in general is reduced because the maximum population size that the environment can support indefinitely in a given period is reduced as there is not enough availability of resources in the environment
The carrying capacity is a measure of the greatest or maximum amount of species that can be catered for given the amount of resources available in the environment. Hence, due to the reduction in space, the carrying capacity of the environment will decease.
The carrying capacity of an environment is directly proportional to the amount of resources available, which could support the survival and growth of the organisms. The amount of land or living area is a factor which also determines the carrying capacity of an environment. Due to the reduction in living area available to the rabbits as a result of the constructed mall, the carrying capacity will decrease as there won't be enough space to support the initial rabbit population any longer.Therefore, the carrying capacity of the environment is reduced due to the limited land area available for the rabbits to occupy.
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Answer:
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Hope this helps
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Based on this:
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- The neon atom having 10 electrons will also be modeled as a nucleus and two orbitals. However, for neon, the first orbital will be having two electrons while the second orbital will be having eight electrons.
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Explanation:A Bohr model of a neon atom differs from the model of a nitrogen atom in several ways:
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The Thermosphere contains a layer of charged particles called the ________________ which makes commucation by _________________ possible and is home to the __________________ (Nothern Lights). This is the layer in which ____________________ fly.
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The Thermosphere contatins a layer of charged particles called the ionosphere which makes communication by radio waves possible and is home to the Aurora Borealis (Northern Lights). this is the layer in which satellites fly.
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1.) What is the Scientific definition of a fruit?
2.) What is the term for the distributing of the seeds after they mature?
3.) Differentiate between mechanical dispersal and and agent dispersal.
Plz thanks (frist one branly)!!!!
God bless
Answers
2. the term for distributing seeds after they mature is called dispersing
3. mechanical dispersal occurs when the ripened fruit opens and scatters seeds
agent dispersal occurs when an animal feeds on fleshy fruits as some seeds pass through the digestive system, while some drop and scatter onto the ground.
hope this helped & god bless