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Natural Selection - Coggle Diagram
Natural Selection
Selection pressures
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Environmental change
e.g., forest shrinking, grass shorter
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Real life examples
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Evolution of a horse
Eocene - short diastema, teeth crowned, 25-50 cm tall
Eocene and Oligogene - taller, have fewer toes, diet change
Miocene- move to plains, increase height size and teeth size, bones fused
Miocene, Pliocene and Pleistocene- legement growth (loss of side toes), modern day horses
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Platypus
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no teeth, have horny pads
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Kangaroos
large ears, network of small blood vessels below surface
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Definition
the process by which certain numbers of a population that are more suited than others to environment conditions survive and reproduce.
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