Unit 8 was about how the human species evolved, the difference between natural change and evolution, how evolution is actually the change in alleles, how species evolve, what is evidence of evolution, and what the origin of life is. Evolution is gradual change in a species, which is the same as the change in alleles. Species can evolve through natural selection, where the weak die off, so only the stronger genes are passed on. Speciation can occur because of behavioral, geographic, or temporal isolation. The two patters of speciation are gradualism and punctuated equilibrium. Evidence of evolution come from fossils, homologous structures, and analogous structures. Earth's history goes very far back, the main eras being the Cenozoic, Mesozoic, Paleozoic, and Precambrian. The Hunger Games Lab was a good lab to teach how natural selection occurred. The Geological Timeline was a good way to see the scale of how old the earth was.
I want to learn more about the past, and how different it was. Would the Earth look like a different planet from now? I wonder what would happen if dinosaurs never went extinct.I have tried to improve my assertive skills , but I still need to work on improving them.
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