Earth History/Evolution 2

Front

What are the layers of the Earth in order from oldest to youngest?

Back

E, B, C, D, A

Front

What is any variation that can help a species survive in a given environment called?

Back

An adaptation

Front

What can biologists compare to test if two species came from a common ancestor?

Back

DNA sequences, body structures, and protein sequences.

Front

What is the study of organisms at the early stages of development?

Back

Embryology

Front

If an organism has a vestigial structure, that structure likely once had a function in a(n)

Back

Early ancestor.

Front

What is the term for the preserved remains or traces of organisms that lived in the past?

Back

Fossils.

Front

What is natural selection?

Back

The process where organisms better adapted to their environment tend to survive and produce more offspring.

Front

What is the significance of homologous structures in evolution?

Back

They indicate common ancestry among different species.

Front

What is extinction?

Back

The end of an organism or a group of organisms, typically due to environmental changes or loss of habitat.

Front

What is the fossil record?

Back

The history of life as documented by fossils, showing the progression of species over time.