Natural Selection

Question 1

Explain how natural selection can lead to evolution.

Revolt · Accepted Answer

When the environment changes, organisms best suited for the new environment survive and reproduce. This allows the favorable adaptation to be passed on to the next generation. Over time, more and more organisms will have the favorable adaptation, and the population will evolve.

Question 2

What did you include in your response? Check all that apply.

Revolt · Accepted Answer

When the environment changes, organisms best suited for the new environment survive and reproduce.; The favorable adaptation is passed on to the next generation.; Over time, more and more organisms will have the favorable adaptation, and the population will evolve.

Question 3

Use the drop-down menus to complete the statements. Each organism in a population produces more offspring than can survive. This is called . In order for natural selection to occur, populations must have . When the environment changes, nature selects favorable . Over time, these in a population.

Revolt · Accepted Answer

Selection 1: overproduction; Selection 2: variation; Selection 3: adaptations; Selection 4: build up

Question 4

Which fox would be best suited for a snowy, wintery environment?

Revolt · Accepted Answer

Answer image: //media.edgenuity.com/EVresources/8302/8302-05/8302-05-02/8302-05-02-20/8302-05-02-20-04/8302-05-02-20-04-image3.png

Question 5

A certain species of frog comes in two different colors, green and brown. A population of these frogs live in and along a river. In 1980, a very large drought occurred, causing most of the river to dry up. Most of the plant life around the river died as well.Why did the green frog population decrease after the drought?

Revolt · Accepted Answer

The green frog population decreased because they lost their camouflage. Before the drought, they blended in with the green plants, but after the plants died and the river dried up, the environment became brown. This made it easier for predators to spot and eat the green frogs, while the brown frogs were better hidden.

Question 6

Why did the color of the peppered moth change?

Revolt · Accepted Answer

The environment changed.

Question 7

A coastal forest was home to a type of burrowing rodent that was not found anywhere else in the world. A year ago, a species of large predator moved to the forest, but the rodents were able to escape by hiding in narrow underground tunnels. Recently, a hurricane flooded most of the forest. A few days later, scientists studying the area found that no members of this species remained.Which best describes why the species became extinct?

Revolt · Accepted Answer

A natural disaster killed off the population by flooding their habitat.

Natural Selection Answers

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