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The troposphere is the lawest portion o Yird's atmosphere. It contains approximately 75% o the atmosphere's mass an 99% o its watter vapour an aerosols.[1]

References[eedit | eedit soorce]

  1. McGraw-Hill Concise Encyclopedia of Science & Technology. (1984). Troposphere. "It contains about four-fifths of the mass of the whole atmosphere."