What keeps us and other organisms alive?
是什麼東西讓我們和其他生物體維持生命嗎？ Scientific studies reveal that the earth's life-support system consists of four main spherical systems that interact with one another-the atmosphere,the hydrosphere,the geosphere,and the biosphere.The atmosphere is a thin spherical envelope of gases surrounding the earth's surface.The geosphere consists of the earth's intensely hot core,a thick mantle composed mostly of rock,and a thin outer crust.makeup 翻譯
藉由流動在生物圈的太陽能量、循環在生物圈的營養素和重力來維持生命.
維持生物生存主要有4種組成:氣圈.水圈.地圈.生物圈氣圈:78%是氮氣.21%是氧氣.1%是其他氣體..還分有對流層.平流層等..水圈:不只有液體 水蒸氣也是 而海占全球71%地圈:有炎熱的地核和很多石頭組成的地殼生物圈:綜合所有的組成空氣.水.土壤.生物等...藉由流動在生物圈的太陽能量、循環在生物圈的營養素和重力來維持生命.
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