E and A Unit Vocabulary

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A system that is used to organize and codify all life on Earth

A beneficial event or situation with a positive outcome.

The study of how molecules, cells and organs interact to form a whole being

Beneficial mutations that occur within a species that enhances its abilities to survive in a given area.

Preserves or traces of organisms that lived in the past whose structures have been replaced by minerals

The selection of naturally occurring variations in populations.

A species of an organism that no longer has any living relatives surviving on the planet

The observable characteristics of an organism