Unit 3 Test Review: Different Environments

How deep a fossil is buried gives scientists clues about its what?

• Age

• Color

• Size

• Shape

Only a few organisms become extinct each year. True or false?

• True

• False

• Only a few species are endangered.

• Extinction rates are decreasing.

Scientists find clues to Earth’s past through fossils.

• True

• False

• Sometimes

• Rarely

When there are not many of one kind of animal left, the animal is considered ___________.

• Extinct

• Endangered

• Common

• Threatened

All endangered organisms will become extinct.

True or false?

• True

• False

• Some will survive

• Only if not protected

In which category is the saber-toothed cat found?

• Extinct

• Endangered

• Living

• Fossil

You can only find what kind of dinosaurs today?

• Bones

• Fossils

• Living specimens

• Eggs

Can an animal go from being extinct to being endangered?

• Yes, an extinct animal can be reintroduced to the wild.

• No. When an animal is extinct, there is no more of them left. You cannot go from none to some

• Yes, if conservation efforts are made.

• Yes, if the animal is cloned successfully.

An animal is endangered when ___________.

• It can no longer find food or live in its environment

• It has too many predators in its habitat

• It is the most common species in its area

• It has an abundance of food sources

10) Some dinosaur fossils have structures that look like wings. This could mean _____

• They could fly

• They were aquatic

• They were herbivores

• They were nocturnal