BI-1898
Causes of global warming
Biology · Secondary 4 · Medium · Causes of global warming
A forest is cleared to build a road. Which statement best explains how this deforestation affects the amount of carbon dioxide in the atmosphere?
- It increases because fewer trees remove carbon dioxide by photosynthesis.
- It decreases because soil now absorbs all the carbon dioxide.
- It stays the same because only oceans control carbon dioxide levels.
- It decreases because dead trees permanently lock up all their carbon.
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