Multiple choice general knowledge

The Greenhouse Effect is caused primarily by :

  1. water vapor

  2. carbon dioxide

  3. carbon monoxide

  4. ozone-destroying aerosol sprays
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Water vapor is indeed the most abundant greenhouse gas and is responsible for the majority of Earth's natural greenhouse effect, keeping the planet warm enough for life. However, the question is misleading because human activities don't directly increase water vapor - instead, warming from CO2 causes more evaporation, creating a feedback loop. The primary driver of recent global warming is the increase in carbon dioxide from human activities.

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