Environment & Ecology · Environmental Ecology
Which of the following activities is the largest contributor to the increase in atmospheric carbon dioxide (CO2) levels?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The biological activity of oceanic phytoplankton
- 2Burning fossil fuels such as coal, oil, and natural gas✓
- 3Natural fluctuations in solar radiation hitting the Earth
- 4Large-scale plantation of trees and vegetation
Correct answer
Burning fossil fuels such as coal, oil, and natural gas
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