Question

define global warming ????​

Answer 1

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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 of average world temperatures as a result of what is known as the greenhouse effect. As the greenhouse gases build up in the atmosphere the Earth gets hotter. ... This process is leading to a rapid change in climate, also known as climate change.