Vegetation 3) By what percent of its natural value has the gross photosynthesis
ID: 115673 • Letter: V
Question
Vegetation
3) By what percent of its natural value has the gross photosynthesis increased? Round to the nearest whole percent.
Volcanoes Atmosphere 589 + 240 ±10 (average atmospheric increase:4 PgClyr) Net land flux 1 Net ocean flux 1.7 2.3 ±0.7 IU Rock weathering 0.1 Export from soils to rivers 1.7 Surface ocean 50 Marine 37 3 Rivers 0.9 Burial 901 1101 0.2 11 Intermediate & deep sea 37,100 Dissolved organic carbon 700 350-550 -30 ±45 soils 1500-2400 +155±30 Fossil fuel reserves Gas: 383-1135 Oil: 173-264 Permafrost 1700 Ocean floor surface sediments 1,750 Coal:446-541 365 ±30 Units Fluxes: PgClyr Stocks: PgCExplanation / Answer
1) Just as per cent means out of a hundred, so parts per million or ppm means out of a million. Usually describes the concentration of something in water or soil. Oneppm is equivalent to 1 milligram of something per liter of water (mg/l) or 1 milligram of something per kilogram soil (mg/kg).
2) Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can later be released to fuel the organisms' activities
3) Intermediate and Deep Sea
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