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Science Chapter 5 Review Answer Key

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Ecosystems
#1 What ecosystem is a cold region where the ground beneath the surface is frozen all year? Some grasses grow, but trees cannot grow. tundra
#2 What is the driest ecosystem with a limited water supply? It has hot, dry weather and sandy soil. desert
#3 What ecosystem has some that are tropical and some that have a mild, rainy climate? rainforest
#4 What ecosystem is covered with grasses and receives a medium amount of rain? grassland
#5 What ecosystem has the ground covered with water for at least part of the year, and is made up of swamps and marshes? wetlands
Vocabulary
#1 What is an ecosystem? All the living and nonliving things that interact in an environment.
#2 What kind of scientist studies fossils? paleontologist
#3 What is a fossil? remains or mark of an animal or plant that lived long ago
#4 What are all the members of one species that live within an area of an ecosystem called? population
#5 What does it mean to use what you need as efficiently as possible? conservation
Animals
#1 What is an example of an animal that lives in the tundra? arctic fox or caribou
#2 What is an example of an animal that lives in the desert? coyotes or lizards
#3 What is an example of an animal that lives in the rainforest? spotted owl or banana slugs
#4 What is an example of an animal that lives in the grassland? grasshoppers, prairie chickens, or bison
#5 What is an example of an animal that lives in the wetlands? insects, alligators, or frogs
Fossils
#1 When scientists find fossils of sea creatures on top of a landform, what does that tell you about the landform? The landform was once covered in water.
#2 When scientists dig and find fossils, the most recent fossils are found on the _________ layer of Earth, while the oldest fossils are on the ___________ layers of Earth. recent = top oldest=bottom
#3 What preserves all the hard and soft parts of an animal? a fossil in amber
#4 What gives clues about a living thing's activities such as where it lived and what it ate? trace fossils
#5 Name an example of trace fossils. tracks in the mud (footprints), a nest, or an eggshell
Resources
#1 What is petroleum, and why is it considered a nonrenewable resource? Oil - It is used faster than it can be replaced.
#2 What are trees, water, soil, minerals, and sunlight known as? natural resources
#3 Name two fossil fuels. coal and oil
#4 What is a resource that can't be replaced when it runs out? Give three examples. nonrenewable resource - oil, coal, natural gas, iron, or steel
#5 What is a resource that can be replaced and won't run out? Give three examples. renewable resource - solar energy, wind energy, water, or oxygen
Final Question