Geologic Time Learning Cycle 1

Front

The complexity of organisms has ______ over time.

Back

increased

Front

The chronological order of all the known fossils is known as the ______.

Back

fossil record

Front

When organisms become more specialized and advanced, we say that they are becoming more ______.

Back

complex

Front

Which layer is the oldest? A, B, or C?

Back

C

Front

The preserved remains or traces of an organism is known as a ______.

Back

fossil

Front

What is the term for the variety of different species in a given area?

Back

biodiversity

Front

What is the process by which different kinds of living organisms develop and diversify from earlier forms?

Back

evolution

Front

What do we call the study of the Earth's physical structure and substance?

Back

geology

Front

What is the term for a natural disaster that can cause significant geological changes?

Back

catastrophe

Front

What is the name of the scale used to measure geological time?

Back

geologic time scale