Question 10 — Why is an excess of - Questions at the end of the chapter - Chapter 13 - Earth as a System: Energy, Matter, and Life (Exploration)

Last updated at July 3, 2026 by

Question 10
Why is an excess of CO₂ in the atmosphere considered undesirable even though it is required by plants?
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  • Although plants need CO₂ for photosynthesis, excess CO₂ strengthens the greenhouse effect, causing global warming, melting ice and rising seas.
  • It also acidifies the oceans, threatening plankton and coral — so the balance, not just the presence, of CO₂ is critical.
Excess Carbon Dioxide Plants do need some carbon dioxide But excess traps too much heat It warms and acidifies the planet
Back to: 13.3.2 Carbon cycle
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