Fill in the blanks.
1. ____________ ॱC rise in temperature has been seen in the last 100 years.
2. Emission of CFC is more than _____________device.
3. The use of resources _____________ has become necessary to prevent temperature rise.
Answers
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Answer:
1) -17⁰c
2) chlorofluorocarbon
3)air conditioner / green house
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