ch 22 micro short answer

ch 22 micro short answer - SHORT ANSWER ch 22 1.Compare and...

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SHORT ANSWER ch 22 1.Compare and contrast the burning of fossil fuels in modern times with the rise of ancient cyanobacteria on atmospheric and planetary conditions. Cyanobacteria began to photolyze and produce molecular oxygen Oxygen is a powerful oxidant that is lethal to anoxic era, which made most anerobic species extinct Since the microbes have shared our biosphere by releasing O2, fixing nitrogen and returning it to atmosphere, fixing and producing CO2 2. Which reservoir of carbon, nitrogen, and sulfur has the highest rate of cycling? Why is this so? Carbon has the highest rate of cycling because it cycles quickly in ocean. Ocean issink and source for carbon 3. Describe the difference between a source, sink, and reservoir of an element. Source- stores significant quantity of element Sink- receive of assimilate significant quantities of an element Reservoir- contain significant amounts of an element needed for life 4. Discuss the impact of deforestation on atmospheric carbon dioxide levels. Deforestation would cause an increase of CO2 in the atmosphere because there would be a decrease of photosynthesis 5. What would happen if household wastewater was emptied into local receiving rivers without prior treatment? Algal bloom would occur. Which is an overgrowth of algae on the water surface, caused by an increase in limiting nutrients Decrease bod and human pathogens
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6. Describe the wetland system set up by a hog farmer to treat his hog-farm waste.
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