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chapter 20 vocab

TermDefinition
ecosystem all the living things and nonliving things in a given area.
biotic factors the living things in an ecosystem.
abiotic factors the nonliving things in an ecosystem. EX: sunlight and water
climate overage weather conditions in an area over time.
atmosphere the layer of glasses that surrounds Earth.
evaporation the process during which liquid water changes into gas called water vapor
condensation the process during which water vapor changes into liquid water.
precipitation water that falls from clouds to Earth's surface.
nitrogen fixation the process that changes atmospheric nitrogen into nitrogen compounds that are usable by living things.
photosynthesis a 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 an ecosystem through feeding relationships.
food web a model of energy transfer
energy pyramid model to show the amount of energy available in each step of a food chain.
Created by: batisgab21
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