Why are upwelling zones generally more productive than coastal oceans?
What will be an ideal response?
Coastal oceans are shallow in comparison to the open ocean with a higher proportion of the water column and higher nutrient inputs coming from terrestrial run-off. However, there is more turbidity in coastal waters, which limits the depth reached by solar radiation. Remembering that sunlight and nutrients are necessary for photosynthesis, upwelling brings cold, nutrient-rich waters up from depth to the surface. Colder water holds more oxygen than warmer waters. Upwelling zones provide nutrients which stimulate photosynthesis. The total area of upwelling zones is relatively small but per unit area; upwelling zones fix more organic carbon than any other ocean zone.
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Coliform bacteria populations are routinely monitored in drinking water supplies, swimming pools, and at beaches because these bacteria
A. Are especially toxic to animals B. May mutate into severely pathogenic strains C. Are more difficult to find in water D. Indicate the presence of feces in water E. Usually live in pesticide-contaminated water
Which isomer of pentane has the highest boiling point?
A) pentane B) 2-methylbutane C) 2,2-dimethylpropane D) None, they all have the same boiling point.
Convergent plate boundaries occur in areas of seafloor spreading
Indicate whether the statement is true or false
Rocks may behave differently over the long spans of geologic time than they do in short-term laboratory experiments.
Answer the following statement true (T) or false (F)