How dose natural selection produce adaptations in a species?

Answers

Answer 1

Answer: For natural selection to occur, several premises must be satisfied. Firstly, there must be variation in a population. If all individuals are the same, there is no variation on which selection can occur. Secondly, these traits must be heritable, meaning they are passed from parent to offspring. Natural selection cannot operate on traits that have no genetic basis. There must also be differential reproduction, which means that some individuals must reproduce more than others. When all of these factors occur, natural selection results in evolution as advantageous traits propagate throughout the population.

Natural selection is quite variable, as changes in the environment impact what traits are advantageous in a particular time and place. A good of example of this comes from Galapagos finches. These birds have varying beak sizes. Wide beaks are best for eating hard seeds, while long narrow beaks are more adept at exploiting the fleshy fruit from trees. Typically narrow beaks are more prevalent, but during drought conditions when trees cannot produce fruit, seeds become a more abundant food item. This results in those finches with wide beaks having more food available and reproducing more than those with narrow beaks. When droughts persist over many years, wide beaks replace narrow beaks as the most common, but this trend reverses when droughts end and fruits once again become available.

Answer 2

Answer: When there is a natural selection upon any species this means that that specific species has an adaptation / a increase in survival skills .

There a Giraffes for EXAMPLE : one group of giraffes have medium length necks and the 2nd group has longer necks , so they can reach the 85 foot tall trees.

That was an example of natural selection , i hoped that my answer helped yo out a lot , have a nice day.

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The blackberry's seeds must be digested by a bird before they can sprout. What type of relationship do the blackberry plants and the birds have? A. commensalism B. mutualism C. neutralism D. parasitismI couldn't quite decide what "subject" this would be, so I chose Biology.

Answers

B. Mutualism
Because the bird has food from the blackberries but the blackberry seeds are distributed when the bird disposes of the seeds and other blackberry plants grow in different areas

The most accepted theory about the origin of Earth is that it formed by a process called planetary _____. differentiation accretion condensation mixing

Answers

Answer:

The most accepted theory about the origin of Earth is that it formed by a process called planetary accretion

Explanation:

The most accepted theory about the origin of Earth is that it formed by a process called planetary accretion. In this process, the Earth is believed to have been formed from a cloud of gas and dust that remained following the Sun's formation. This cloud of gas and dust is referred to as the solar nebula.

Differentiation refers to the process by which the various layers of the earth were formed; core, mantle, and crust

Answer:

It's Accretion

In an example of a mangrove forest food web, phytoplankton produce 500,000,000 pounds of biomass. Alligators are the apex predators in a 5-level trophic pyramid. How many pounds of biomass will the alligators in that mangrove forest receive?

Answers

hello so the answer is suppose to be 20 words but idk but its a or b or d or c one of those :)

Final answer:

The alligators in the mangrove forest will receive a portion of the 500,000,000 pounds of biomass produced by the phytoplankton in the food web.

Explanation:

To determine how much biomass the alligators in the mangrove forest will receive, we need to follow the energy flow in the food web. Phytoplankton, as primary producers, produce 500,000,000 pounds of biomass. The energy from the phytoplankton is then passed on to primary consumers, secondary consumers, and so on. As apex predators, the alligators will receive the biomass from all the trophic levels below them. The exact amount will depend on factors such as energy transfer efficiency between trophic levels, but the alligators will receive a portion of the 500,000,000 pounds of biomass.

Learn more about Mangrove forest food web here:

brainly.com/question/19760874

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In a fox population the frequency of red fur changes from 20% to 50% in the population within 2 generations. What can be said about that population of foxes?

Answers

Answer:

The population is evolving

Easy Question. Will mark brainliest. Considering the impacts and benefits of bioprospecting, which of the following describes the most likely impact?

It could be harmful to the ecosystem.

It may make additional types of medical treatments available.

It is more expensive than creating synthetic compounds.

It provides additional variety of known chemical compounds.

Which of the following strategies are used in biotechnology to solve a problem?

I. Genetic engineering
II. Biomimicry
III. Biochemical engineering

I only
II only
I and II only
I, II, and III

Answers

Genetic engineering and biochemical engineering

Describe the post-fertilization changes in a flower

Answers

Answer:

Changes which occur after fertilisation is called post fertilisation.

1.ovary changes to fruit and wall of ovary changes to fruitwall

2.ovule changes to seed and ovule layer changes to seed coat

3.diploid zygote changes to diploid embryowhich develop into young plant

Hey hope this helps you! Please let me know if any further help is needed !

Answer:

hi I'm an Indian girl ........

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