How do greenhouse gases contribute to global warming?

Question

Options

• AThey stop light from reaching the earth.
• BThey stop heat escaping from the earth.
• CThey stop moisture escaping from the earth.
• DThey stop radiation from reaching the earth.

• A
  2% (1)
• B
  81% (34)
• C
  10% (4)
• D
  7% (3)

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