Explain with suitable examples how atmosphere sustains life.
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The atmosphere acts as a blanket by trapping the terrestrial radiation and keeping the earth warm. ... The mass of air also moves about to maintain the natural thermal balance making the planet earth livable. • The atmosphere contains oxygen, the gas living beings need to breathe to stay alive.
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Earth's atmosphere is composed of about 78% nitrogen, 21% oxygen, and one percent other gases. ... The atmosphere protects life on earth by shielding it from incoming ultraviolet (UV) radiation, keeping the planet warm through insulation, and preventing extremes between day and night temperatures.
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