keyterms chapter 22

producer

organism that makes its own food
consumer

organism that obtains energy by feeding on others
herbivore

consumers that only feed on plants
carnivores

consumers that only feed on animals
omnivores

consumer that feeds on both animals and plants
scavenger

carnivore that feeds on the bodies of dead organism
decomposers

break down wastes and dead organisms and return raw material to the ecosystem
food chain

a series of events in which a organism eats other and obtain energy
food web

many over laping food chain in an ecosystem
energy pyramid

shows the amount of energy that moves from one feeding level to another in a food web
water cycle

process by which water moves from earths atmosphere and back
evaporation

the process by which molecules of liquid water abosorb energy and change to gas
condensation

process by which gas changes into liquid
precipitation

rain, snow, sleet, or hail
nitroge fixation

the process by changing free nitrogen into a usable form of nitrogen

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renesimon

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keyterms chapter 22

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science

Updated

2010-05-04T14:56:36Z

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