Food Chains and Animal Adaptations

How have some animals adapted to extremely hot temperatures?

• by changing color

• by sleeping at night

• by using camouflage

• by burrowing underground

Which situation will most likely occur if heavy rains cause an increase in

the worm population?

• The bird population will increase.

• The bird population will decrease.

• The bird population will stay the same.

• The bird population will migrate to a drier area.

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How will a large number of rabbits born in an area affect the plants

there?

• The plant numbers will increase.

• The plant numbers will decrease.

• The plants will stop growing.

• The plants will grow faster.

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As temperatures drop in the north, what will most birds do?

• migrate

• hibernate

• store food

• build nests

Which situation was most likely the reason an animal began hibernating

for the winter?

• There was a hard freeze for a long time.

• The temperature was hot for a long time.

• A drought caused a reduction in plant life.

• A storm caused a large amount of rainfall.

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Below is a food chain.

grasses -> crickets -> mice -> snakes -> hawks

Which population would most likely increase if the number of mice

decreases?

• hawk

• snake

• cricket

• grasses

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If the population of a prey’s natural predator decreases, which would

most likely result?

• an increased population of trees

• an increased population of prey

• a decreased population of prey

• loss of all prey

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Which example is an inherited behavior?

• a cat using a litter box

• an otter swimming in a river

• a bird repeating a human phrase

• a dog bringing back a ball that was thrown

Why would bats begin to eat more once summer ends?

• They are preparing to migrate.

• They are preparing for hibernation.

• More offspring are born at this time of year.

• Their ability to track food by echolocation is reduced.

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How do monarch butterflies most likely know when in autumn to migrate

south?

• They fly away after all the leaves change colors and fall off the trees.

• They leave for warmer climates on the same weekend of every year.

• They notice other animals are migrating or hibernating.

• They sense the weather is turning colder.