ERTH 2403 Lecture 9: Lecture 9
2 Sep 2016
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Document Summary
Can utilize simple molecules to form complex systems. Source of energy: sun light, photosynthesis chemical energy, earth"s internal heat, chemosynthesis chemical energy, energy is converted to food. C6h12o6 used for: growth, repair, movement, reproduction, breakdown process yields heat energy to space. Energy stored by chemosynthesis: energy = oxidation of h2s, no light required. 6co2 + 6o2 + 24h2s c6h12o6 + 24s + 18h2o. = grams of carbon bounds in organic matter per square meter of ocean surface per year. Secondary to top consumers (animals: heterotrophs carnivores. Decomposers (primarily bacteria: release nutrients for primary producers, heat energy lost to space. Major components > 105 ppm: 99% of all living organism requires: Macronutrients > 103 ppm: essentials, sodium, magnesium, phosphorous, chlorine, potassium, calcium, iodine, selenium, Below 600m: temperature, affects metabolic rates, ectotherms b. i. Internal temperature remains close to the surrounding: endotherms c. i. Have stable internal temperatures: salinity, can damage cells b.
