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Bio CH29
Biology CH29 Evolution
Term | Definition |
---|---|
competition | the struggle among living things to get their needs for life |
evolution | a change in the hereditary features of a group of organisms over time |
extinct | a life-form that no longer exists |
fetile | being able to reproduce by forming egg or sperm cells |
fossil | the remains of once-living things from ages past |
natural selection | the process in which something in a living thing’s surroundings determines if it will or will not survive to have offspring |
new-world monkey | those monkeys that have a tail that can grasp like a hand and nostrils that open upward |
old-world monkey | those monkeys that cannot grasp with their tail, if they have one, and whose nostrils open downward |
primate | mammals with eyes that face forward, a well-developed cerebrum, and thumbs that can be used for grasping |
sedimentary rock | rocks that form from layers of mud, sand, and other fine particles |
species | the smallest group of living things; a group of living things that can breed with others of the same species and form fertile offspring |
variation | a trait that makes an individual different from others of its species |
vestigial structure | a body part that no longer has a function |