The incoming solar energy
The incoming solar energy . Review of last lecture. The standard units of measurements (SI) Earth ’ s three atmospheres: 1st: 4.6 billion years ago, H, He, magnetic field, volcano 2nd: 4 billion years ago, CO 2 , H 2 O, N 2 , life, ocean 3rd: 400 million years ago, O 2 , land
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