This article discusses how plants and microorganisms, until recently, have mostly controlled how much carbon dioxide is released into an ecosystem, and explains how this process works. Humans' burning of fossil fuels has upset the balance of this system and threatens the ecological viability of organisms.

Concepts

carbon dioxide, climate change

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Additional Tags

carbon-oxygen cycle, ecological balance, ecosystem, ecosystem balance, fossil fuel, greenhouse effect, greenhouse gas

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Classroom Considerations

• Knovation Readability Score: 5 (1 low difficulty, 5 high difficulty)