Question

what is global warming ???????​

Answer 1

Global warming is the long-term heating of Earth's climate system observed since the pre-industrial period (between 1850 and 1900) due to human activities, primarily fossil fuel burning, which increases heat-trapping greenhouse gas levels in Earth's atmosphere.

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Answer 2

Answer:

Global warming is the increase in the average temperature of Earth's near- surface of air and oceans.

Evidence for the warming of climate system includes observed increases in global average air and ocean temperatures,widespread melting of snow and ice and rising global average sea level.