Chapter 5: Ecosystems

In which type of ecosystem is the ground beneath the surface frozen all year?

• desert

• prairie

• tundra

• wetland

Which kind of fossil preserves the hard and soft parts of an animal

• a trace fossil

• a cast fossil

• a fossil from a tar pit

• a fossil in amber

Which is not a trace fossil?

• a preserved skull

• a preserved track

• a preserved nest

• a preserved eggshell

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Invasive plants that do not have competitors in their habitats can cause change by

• growing so large they block out other plants' sunlight.

• absorbing more water than other plants.

• providing food for animals

• all of the above

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Why are fossil fuels considered nonrenewable resources?

• They are found in the ground.

• They cannot be replaced as fast as humans can use them.

• They are not made from livings things.

• They create pollution when burned.

Which resource would plants NOT compete for?

• sunlight

• water

• insects

• space

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Renewable resources_______________________________

• can run out.

• are not usable unless processed by humans

• are not able to be used again.

• can be replaced

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What might finding a fish fossil in a desert tell paleontologists?

• how plants have changed

• how Earth's environment has changed

• how animals once got enough to eat

• how animals once attracted mates

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Which of the following are nonrenewable resources?

• phosphate

• water

• oxygen

• trees

What is a trace fossil?

• a fossil that is a form of a living thing, which was filled in by minerals

• a fossil such as a footprint or nest that shows how an animal lived

• a fossil preserved by another substance such as tree sap

• all fossils are trace fossils