Which of the following items would NOT be classified as a fossil?

An arrowhead made by an early human.

An impression of a fern leaf in stone.

A preserved shell from an ancient sea.

Which of the following best defines a fossil?

Any ancient rock found deep underground.

The complete, unchanged remains of an extinct animal.

Preserved evidence of a once-living organism from the past.

A human-made tool or object from an ancient culture.

Because there are no bones present.

Because it is evidence of a past living organism's activity.

Because the mud has turned into a valuable type of rock.

Because it was found near a river.

To predict future climate change.

To understand what life and past environments were like.

To locate new sources for oil and gas.

All rocks contain some form of biological data.

Evidence of past life is found embedded within layers of rock that represent geological time.

Only biologists are qualified to interpret information found in rocks.

Geological events, like volcanic eruptions, are recorded in the DNA of living things.