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Evolution

Review of Evolution and Natural Selection

TermDefinition
Cenozoic Era When mammals evolved including humans, allowing them to live in a variety of environments
Mesozoic Era When most dinosaurs and flowering plants appeared
Paleozoic Era A time period rich with marine life fossils including invertebrates & some plant life
Precambrian Time 90% of earth’s history occurred during this time, but few fossils existed
Relative dating the age of a fossil determined by comparing its placement with that of fossils in other layers of rocks
Radioactive dating calculates the age of rocks based on the remaining radioactive isotopes it contains
Fossils the best evidence for evolution
Natural selection The process by which individuals that are better adapted to the environment survive and reproduce more successfully than other members of their species
Selective breeding The process by which individuals that are better adapted to the environment survive and reproduce more successfully than other members of their species
The thumb evolving because of cell phone nuse
Analogous Structure similar in function but not necessarily similar in structure
Homologous Body Structure body parts are similar in structure but not in function
Vestigial Structure Parts of the body are reduced in size and function such as a snake’s pelvis and whale’s hip
Charles Darwin Author of The Origin of the Species
Hominid the group of all modern and extinct Great Apes (modern humans, chimpanzees, gorillas and orang-utans plus all their immediate ancestors).
Chimpanzees closest human relatives
Bipedal using two legs
Lucy famous hominid that lived 3.2 million years ago
Paleontologists Scientists who study fossils
Created by: tobiashersey
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