Resources from the Past Lesson 3 Saving Earth's Resources

Evidence of a living thing from long ago is preserved as a

• fossil

• sedimentary rock

• climate

• nature

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Many fossils are found preserved in

• fossil

• sedimentary rock

• climate

• nature

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Fossils also form in spaces left in rock by dead organisms. These spaces are called

• fossil

• molds

• Casts

• nature

Minerals fill in spaces, forming fossils called

• fossil

• molds

• Casts

• nature

Some fossils are formed when an organism such as a leaf or dinosaur foot is pressed into a soft surface, leaving an

• fossil

• molds

• Casts

• imprint

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An entire organism can be preserved , such as an insect trapped in fossilized sap called

• tundra ice

• amber

• Casts

• imprint

An entire organism can be preserved , such as a mammoth trapped in

• tundra ice

• amber

• Casts

• imprint

Living things change over time, this information can be found in fossils that show how change has happened on Earth's land and

• climate

• amber

• Casts

• imprint

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Something that can supply energy is a

• climate

• fuel

• fossil

• rock

Fuel that is made from remains of ancient living things is a

• climate

• fuel

• fossil

• fossil fuel