Biology for IGCSE & O level - Human Influences On Ecosystems (Section 6 - No. 7)
What is the primary cause of the greenhouse effect?
Depletion of the ozone layer.
Increase in the amount of solar radiation reaching Earth.
The presence of greenhouse gases in the atmosphere.
Volcanic eruptions.
Explanation
The greenhouse effect is primarily caused by the presence of greenhouse gases in the atmosphere which trap heat.
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