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12.21: The Carbon Cycle

Difficulty Level: At Grade Created by: CK-12
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Vocabulary

TermDefinition
carbon cycle Pathways through which carbon is recycled through the biosphere.
cellular respiration Process of breaking down glucose to obtain energy in the form of ATP.
fossil fuel Remains of long-dead organisms that now serves as an energy source, such as as oil, coal, or natural gas.
global warming Global rise in Earth’s temperature due to increases of greenhouse gasses in the atmosphere.
greenhouse gas Gas that lets in light energy but does not let heat escape, contributing to global warming.
photosynthesis Process by which specific organisms (including all plants) use the sun's energy to make their own food from carbon dioxide and water; process that converts the energy of the sun, or solar energy, into carbohydrates, a type of chemical energy.

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Difficulty Level:
At Grade
Grades:
7 , 8
Date Created:
Nov 29, 2012
Last Modified:
Sep 11, 2016
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