LIFESCI 1 Chapter Notes - Chapter 25: Volcanism, Biomineralization
Document Summary
The short term carbon cycle: keeling"s discovery, seasonal oscillations of amount of carbon dioxide in the atmosphere (keeling curve, atmospheric co2 levels have increased over time, how is carbon dioxide added to the atmosphere, geologic inputs (volcanoes, mid ocean ridges, etc. , biological inputs (respiration, human activities (deforestation, burning fossil fuels, how is carbon dioxide removed from the atmosphere, geologic removal (chemical weathering from rainwater, biological removal (photosynthesis, only biology affects the rhythm of the keeling curve. Photosynthesis and respiration are key processes in short term carbon cycling: photosynthesis, use of energy from the sun to form atp and nadh to reduce co2 to carbs, 6co2 + 6h2o 6c6h12o6 +6o2, removes about 25% of co2 from the atmosphere annually, aerobic respiration, oxidizes organic compounds into carbon dioxide, creating atp for cellular processes, 6c6h12o6 + 6o2 6co2 + 6h2o (reverse reaction of photosynthesis, photosynthesis and aerobic respiration are metabolic pathways that naturally complement each other.
