F07.204.Cycles (1) - Applying the Rules to Environmental...

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1 Applying the Rules to Environmental Science: Biogeochemical Cycles Earth: Matter does not come and go Earth is a closed system to matter So… matter is constantly recycled on Earth
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2 Biogeochemical Cycles: Reservoirs & Pathways Atmosphere Hydrosphere Lithosphere Biosphere Some Major Cycles of Matter •Water Cycle •Rock Cycle •Chemical Cycles •Carbon •Nitrogen •Phosphorous •Sulfur
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3 Carbon Cycle Atmosphere Hydrosphere Lithosphere Biosphere Carbon Cycle: Reservoirs Atmosphere Hydrosphere Lithosphere Biosphere 1x (= 7.3x10 17 grams carbon) 3x 55x 35,000x
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4 Carbon Cycle Atmosphere Hydrosphere Lithosphere Biosphere Photosynthesis Respiration& Decay Carbon Transfer: Biosphere Atmosphere Photosynthesis (Atmosphere to Biosphere) Carbon Dioxide + Water + Sunlight --> Sugar + Oxygen Respiration (Biosphere to Atmosphere) Sugar + Oxygen --> Carbon Dioxide + Water + Energy
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