The answer is; B
Oceans currents circulate heat energy from the sun around the planet hence making the world temperatures more or less within a constant range. The sun heats the equatorial region more than the poles. Warm oceans currents from this region carry this heats toward the higher latitudes and the cold current from the poles cycle back to the equator.
Explanation:
greenhouse effect is something that is studied under climatology
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Answer:
eutrophication
Explanation:
Excessive amounts of nutrients speed up the eutrophication process. Which will occur if humans continue to overload water systems
... A recreational lake experiences eutrophication because of excess nutrients.