WBCS.LIVE practice question

On an average, the Earth's lower atmosphere contains approximately what percentage of water vapor by volume?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. 1%
  2. 5%
  3. 10%
  4. 21%

Correct answer and explanation

Correct answer: 1%

Explanation: āœ… Correct Answer: A) 1% šŸ“š Explanation: While the exact amount of water vapor in the atmosphere is highly variable depending on temperature and geographical location (ranging from 0% in deserts to 4% in humid tropics), the global average is approximately 1%. Despite this incredibly small percentage, water vapor acts as the Earth's most potent natural greenhouse gas, heavily regulating the global climate.