Changes in the Environment

A forest fire burns down all of the trees in a forest. Which plants or animals are most likely to thrive soon after the fire ends?

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Both the hawk and the prairie dog live on the prairie. Which of them would more likely survive a drought on the prairie?

• the hawk, because it can fly to a new location

• the hawk, because it can eat prairie animals

• the prairie dog, because it can live underground

• the prairie dog, because it is smaller

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NGSS.MS-LS2-1

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A strong hurricane strikes a small island. Which island animals are most likely to thrive soon after a hurricane?

• animals that live in trees

• animals that run quickly

• animals that are the largest

• animals that move slowly on land

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A river rises over its banks and floods the land around it. Why do many plants thrive after the flood?

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Which animals are most likely to perish when their environment is flooded?

• farm animals, such as cattle and sheep

• wild birds, such as geese and ducks

• animals that can climb trees, such as squirrels and some lizards

• animals that live around ponds, such as frogs and snakes

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Which child’s idea do you agree with? Why?

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What is a drought?

• A drought is a short period of normal rainfall.

• A drought is a period of excessive rainfall.

• A drought is a prolonged period of abnormally low rainfall.

• A drought is a sudden increase in rainfall.

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Name one way to conserve water during a drought.

• Water your lawn more frequently

• Take longer showers

• Fill up the bathtub every time you use it

• Take shorter showers

If the snakes perish, which organism would thrive?

• the grass

• the grasshopper

• the road runner

• the sun

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If the road runners start thriving, how would it affect this ecosystem?

• the snakes will also thrive.

• The snakes will perish

• the grass will perish

• the grasshoppers will perish

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