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