1、Global warming is a natural phenomenon. Because people burning fossil fuel, such as oil, coal, or deforestation and the burning will produce large amounts of carbon dioxide, the greenhouse gas, these greenhouse gases on the radiation from the sun visible light has high permeability, and the long wave radiation emitted from the earth with a highly absorbent, can strongly absorb infrared radiation on the ground, resulting in the earth's temperature to rise, the greenhouse effect. And when the greenhouse effect will continue to accumulate, resulting in gas absorption and emission of energy balance, energy accumulation in the earth atmosphere system, resulting in rising temperature, resulting in the phenomenon of global warming. Global warming will make the global distribution of precipitation, glaciers and permafrost melting, sea level rise, not only endanger the balance of natural ecosystems, but also threaten the survival of mankind.

　　2、全球氣候變暖是一種自然現象。由于人們焚燒石燃料，如石油，煤炭等，或砍伐森林并将其焚燒時會産生大量的二氧化碳，即溫室氣體，這些溫室氣體對來自太陽輻射的可見光具有高度透過性，而對地球發射出來的長波輻射具有高度吸收性，能強烈吸收地面輻射中的紅外線，導緻地球溫度上升，即溫室效應。而當溫室效應不斷積累，導緻地氣系統吸收與發射的能量不平衡，能量不斷在地氣系統累積，從而導緻溫度上升，造成全球氣候變暖這一現象。全球變暖會使全球降水量重新分配、冰川和凍土消融、海平面上升等，不僅危害自然生态系統的平衡，還威脅人類的生存。

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