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Global Ecology

2. Outline. Atmospheric EnvelopeGreenhouse EffectEl NinoEffectsTropical DeforestationHuman Influence on Atmospheric CompositionDepletion and Recovery of the Ozone Layer. 3. Atmospheric Envelope. Clean, dry air at the earth's surface is approx:78.08 % Nitrogen20.94 % Oxygen0.93 % Argon

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Global Ecology

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