Unit 1 Lesson 5 Review

Front

What are most likely to form fossils?

Back

Organisms with hard parts.

Front

What is an example of a whole body fossil?

Back

An insect trapped in amber.

Front

What does it mean if a species is extinct?

Back

There are no living members of this species.

Front

Which organism is most likely to form a fossil?

Back

Horseshoe crab.

Front

What happens when an insect gets stuck in resin that hardens into amber?

Back

It becomes a whole body fossil.

Front

What is a fossil?

Back

A preserved remains or impression of a once-living organism.

Front

What type of fossil is formed from the imprint of an organism?

Back

Mold fossil.

Front

What is a cast fossil?

Back

A fossil that forms when a mold is filled with minerals.

Front

What is a trace fossil?

Back

A fossil that shows evidence of the activity of an organism, like footprints.

Front

What conditions are necessary for fossil formation?

Back

Rapid burial and the presence of hard parts.