Evidence for Evolution 2

Fossils show how the sizes of certain animals has changed drastically over millions of years

Fossils show how life forms present today are different than those from the past

Fossils show that some species have gone extinct

Different sedimentary rock layers provide evidence for how the environment has changed over time

Separation

Population

Ancestor

Environment

Vestigial structures

Homologous structures

DNA

Fossil record

Vestigial structures

Homologous structures

DNA

Fossil record

many animals have homologous structures due to common ancestry

We can observe changes in life forms by observing the fossil record

Many animals have vestigial structures from an ancestor

All of these are evidence for evolution