Describe the four sources of evidence for evolution upon which Darwin based his ideas in common descent.

- Fossil record

- Geography

- Embryology

- Comparative anatomy

Explanation:

The four types of evidence for evolution upon which Darwin based his ideas were:

1-The geographic distribution of related species. The theory of evolution states that species evolve in geographic areas that were colonized by their ancestors.

2-The fossil record shows successions of organisms through time

3-Embryology: animal embryos in related species are very similar in the early stages of development but differentiate as they grow, thereby suggesting these species evolved from a common ancestor.

4-Comparative anatomy demonstrates physical and structural similarities between species. The species share anatomical similarities because they descend from a common ancestor (i.e., presence of homologies).

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explanation: