Animals Through Time

Scientists found a whale fossil in the middle of the desert because…

• whales live in the desert habitat.

• whales used to live in the desert habitat

• there used to be a lake in the middle of the desert habitat.

• the desert habitat used to be an ocean

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The green anoles are such good climbers because…

• they like climbing trees.

• they need to be able to climb to get food that is high up in the trees.

• they need to be able to get away from brown anoles on the ground.

• the green anoles that were poor climbers were more likely to get eaten by brown anoles, so they had fewer babies.

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There are so many different varieties of dogs because…

• people chose to breed dogs with traits they wanted.

• dogs wanted to be different from each other.

• dog babies (puppies) were different from their parents.

• dogs have a lot of puppies.

Becky has light-colored skin. During the summer, sometimes her skin turns red if she stays in the sun too long.

• Becky’s skin color is a trait she got from her parents.

• Becky’s skin color changed because of her experience in the summer.

• Both a and b.

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A polar habitat today was always a polar habitat in the past.

• True

• False

We can learn about extinct animals by studying their fossils and comparing them to animals living today.

• True

• False

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When habitats change, the kinds of animals and plants that live there change, too.

• True

• False

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You take a trip to the local quarry. You walk all the way to the very bottom. At the bottom of the quarry you find the fossils shown in the image above. What kind of habitat do you think was in this location when these animals were alive?

• Grassland

• River

• Ocean

• Desert

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What did dinosaurs eat? How do scientists know?

• ate meat, some ate plants because of bones

• ate meat, some ate plants because of teeth

• ate meat because they are carnivores

• ate plants because they are herbivores

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How do scientists know that the footprints they found came from dinosaurs?

• rocks

• soil

• fossils

• leaves

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