Natural Selection

Question 1

Use the drop-down menus to complete the statements.

Revolt · Accepted Answer

Each organism in a population produces more offspring than can survive. This is called .: overproduction; In order for natural selection to occur, populations must have .: variation; When the environment changes, nature selects favorable . Over time, these in a population.: adaptations; When the environment changes, nature selects favorable . Over time, these in a population.: build up

Question 2

Use the drop-down menus to complete the statements.

Revolt · Accepted Answer

✔ overproduction; Each organism in a population produces more offspring than can survive. This is called .: overproduction; In order for natural selection to occur, populations must have .: variation; When the environment changes, nature selects favorable . Over time, these in a population.: adaptations; When the environment changes, nature selects favorable . Over time, these in a population.: build up

Question 3

extinction✔ variationpredation

Revolt · Accepted Answer

✔ variation

Question 4

✔ adaptationspopulationsextinctions

Revolt · Accepted Answer

✔ adaptations

Question 5

decline✔ build upstay the same

Revolt · Accepted Answer

✔ build up

Question 6

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 7

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 8

Why did the color of the peppered moth change?

Revolt · Accepted Answer

The environment changed.

Question 9

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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