Changes Over Time Vocabulary Quiz

Match it! Select the correct answer from the pull down...Good luck!

The variety of organisms that inhabit the earth

Similar structures that related species have inherited from a common ancestor

Preserved remains or traces of an organisms that lived in the past

Gradual change of a species over time

Gaps in the fossil record

Any change in the DNA of an organism

Process where scientists look at the half-life of chemicals contained in rocks to determine the age

The disappearance of a species