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CH 20

TermDefinition
Ecosystem is all the living things and nonliving things in a given area
Biotic Factors living things in the ecosystem
Abiotic Factors nonliving things in an ecosystem,such as sunlight and water
Climate describes average weather conditions in an area over time
atmosphere layer of gases that surrounds Earth
evaporation process during which liquid water changes into a gass called water vapor
condensation the process during which water vapor changes into liquid water
precipitation falls from clouds to Earths surface
nitrogen fixation process that changes atmospheric nitrogen into nitrogen compounds that are usable by living things
photosynthesis series of chemical reactions that convert light energy,water,and carbon dioxide into the food-energy molecule glucose and give off oxygen
chemosynthesis the process during which producers use chemical energy in matter rather than light energy and make food
food chain a model that shows how energy flows in a ecosystem through feeding relationships
food web to show how food chains in a community are interconnected
energy pyramid shows the amount of energy available in each step of food chain
Created by: InaayaQ
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