what is global warming
Answers
Global warming is the unusual increase of temperature in the Earth's surface. Global warming is when the Sun's energy enters the atmosphere and heats the Earth by light waves. The energy warms the Earth, and then re-radiates infrared waves back into space.
Answer:
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. The term is frequently used interchangeably with the term climate change, though the latter refers to both human- and naturally produced warming and the effects it has on our planet. It is most commonly measured as the average increase in Earth’s global surface temperature.