Fossils

Question 1

The image shows a fossil that is hard like rock but that resembles a tree.

Revolt · Accepted Answer

This fossil was an organism that has been turned into rock.

Question 2

Why is still water an ideal environment for the formation of mold and cast fossils?

Revolt · Accepted Answer

Sediment builds up over organisms.

Question 3

How are casts formed by decaying organisms?

Revolt · Accepted Answer

Impressions left by organisms are filled in with sediment that hardens into rock.

Question 4

Which is a way that paleontologists have contributed to humans' understanding of the history of life?

Revolt · Accepted Answer

They grouped organisms by the period in which they existed.

Question 5

Which type of fossils form from hardening sediment?

Revolt · Accepted Answer

casts

Question 6

Study the timeline.

Revolt · Accepted Answer

Humans have only recently existed on Earth.

Question 7

Which feature do amber fossils have that mold fossils do not?

Revolt · Accepted Answer

preserved soft tissue

Question 8

Which statement explains something that the fossil record indicates?

Revolt · Accepted Answer

Mass extinctions have occurred several times on Earth.

Fossils Answers