ERTH 2403 Lecture Notes - Lecture 9: Chemosynthesis, Nitrogen Cycle, Chemical Energy
26 Apr 2016
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Lecture 9 chapter 13: life in the ocean. Can transform one kind of energy to another. Can utilize simple molecules to form complex systems/molecules. Photosynthesis chemical energy: earth"s internal heat. Consume the plans and use chemical energy (carbohydrates etc. ) 6co2 + 6h2o c6h12o6 + o2 (carbon dioxide + water) (sugar + oxygen) the release of oxygen leaves sugar. C6h12o6 (sugar) in organisms is used for: growth, repair, movement, reproduction, breakdown processes yields heat energy back into space. 6co2 + 6o2 + 24h2s c6h12o6 + 24s + 18h20 (carbon dioxide + oxygen = h2s) (sugar) + sulphur + water. In oceans by photosynthesis gc/m2/yr = grams of carbon bound in organic matter per square meter of ocean surface year. Major components > 105 parts per million: 99 % of all living organisms: carbon, oxygen, hydrogen, nitrogen (sometimes phosphorus) Macronutrients > 103 parts per million: essential: na, mg, p, cl, k, ca, i, si, s.
