LS4.A - Evidence of Common Ancestry

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relating to recent times or present

The top rock layer and its fossils is the youngest and the bottom is the oldest.

A process in which individuals that have certain inherited traits tend to survive and reproduce at higher rates than other individuals because of those traits.

development of an organism between conception and birth

when organisms are descended from a single ancestor

A record of the geologic events and life forms in Earth's history.

Closely related organisms often share similar structures in their bodies, despite different lifestyles. The simplest explanation for such similarities is that both species descended from a common ancestor.

the study of similarities and differences among structures of living species