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Question

What is Global Warming?
  1. Increase in temperature of earth's surface and atmosphere
  2. Increase in sun's temperature
  3. The sun gets closer to the earth
  4. All of the above

A
Increase in temperature of earth's surface and atmosphere
B
Increase in sun's temperature
C
All of the above
D
The sun gets closer to the earth
Solution
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Global warming is the unusually rapid increase in Earth's average surface temperature and atmosphere over the past century primarily due to the greenhouse gases released by people burning fossil fuels.
The correct option is A.

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