Theory of evolution

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an old photo of two gorillas and a man in a suit with a beard

Download the World Darwin Day representing the evolotuion theory illustration 23968389 royalty-free Stock Photo from Vecteezy for your project and explore over a million other images and backgrounds.

an info sheet with information about natural selection

Charles Darwin and Alfred Russel Wallace's theory explains how evolution occurs. Individuals naturally vary in traits in a population. With limited resources, competition exists in which those better adapted - with beneficial traits suited to the environment - are more likely to obtain resources, survive, reproduce, and pass traits to offspring over successive generations. This natural selection of advantageous traits leads species to evolve over time.

a tree with different types of plants and animals on it, labeled in the diagram below

A phylogenetic tree is a graphic that shows how creatures have evolved over time. Phylogenetic trees are only that: theories, not facts. A phylogenetic tree's branching pattern indicates how species or other groupings emerged from a common ancestor. Two species are more linked in trees if they have a recent common ancestor, and less related if they share a distant common ancestor. Phylogenetic trees can be drawn in a variety of ways. The information carried by a tree does not change as it is…

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