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The gas which is largely responsible for green house effect is:

  • A.Ozone
  • B.Carbon dioxide
  • C.Methane
  • D.Water Vapor

Answer: B

Carbon dioxide is chiefly responsible for the enhanced greenhouse effect.

Water vapour absorbs more infrared in total, but its concentration is set by temperature rather than by human activity. Carbon dioxide from burning fossil fuels is the gas that is rising, long-lived, and driving the change; methane is more potent per molecule but far scarcer.

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