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Habitats and Environments Study Guide
hibernation
migration
fossils
forest
estuary
hurricanes
decomposer
fires
1. Scientists are able to use evidence from fossils to prove that past environments
existed.
2. A beneficial effect of fires is that they can add nutrients to the soil and help
plants.
3. During the winter months when it is very cold, animals may use hibernation or
migration in order to survive.
4. Trees and streams make the forest a suitable habitat for deer.
5. A mushroom is an example of a decomposer.
6. The estuary is a habitat that contains brackish water. You can find cordgrass and
crab living in this environment.
7. Limited space of food, clearing of habitats, and hurricanes are three examples of
habitat changes that force plants and animals to relocate or adapt in order to
survive.
8. A fossil of a shark tooth was found in a mountainous area. What can you infer about
the area’s previous environment?
Millions of years ago the mountains were underwater.
9. What may happen to organisms living in a habitat as a result of natural disasters
such as hurricanes, floods, and landslides?
Some of the plants and animals may die.
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10. What is missing from the food chain below? Explain your answer.
Sun

?
 cricket  small bird  snake  owl  ?
A producer like grass is missing from this food chain. The cricket needs grass to eat,
and grass can make its own food from the sun. A decomposer is missing from the end
of the food chain. After the owl dies a decomposer will break down the dead animal
releasing nutrients back into the soil.
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