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SCI vocab chapter 20

chapter 20 lesson 1-3

TermDefinition
Ecosystem All the living and non-living things in a given area
Biotic factor Living things in an ecosystem
Abiotic factor Non-living things in an ecosystem
Climate Average weather conditions in an area over time
Atmosphere The layer of gasses that surround Earth
Evaporation The process during which liquid water changes into a gas called water vapor
Condensation The process during which water vapor changes back into liquid water
Precipitation Water that falls from clouds
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 then light energy and make food
Food chain A model that shows how energy flows in an ecosystem through feeding relationships
Food web How food chains in a community are interconnected
Energy pyramid Shows the amount of energy available in each step of a food chain
Created by: AnEpicWinner
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