Eutrophication is a process that leads to enrichment of ponds, lakes and any water body with minerals such as nitrogen and phosphorus. Aquatic ecosystems are diverse and consists of phytoplanktons, zooplanktons, fish and other animals. Too much enrichment of the ecosystem adversely effects the flora and fauna of the aquatic bodies. Eutrophication leads to more uptake of oxygen and increases biological oxygen demand of water. With less oxygen available for animals inside the aquatic systems, they might began to die. Eutrophication is a result of human activities and must be minimized for the betterment of aquatic bodies and aquatic animals. Thus, eutrophication might lead to destroy the aquatic bodies over a period of time.
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Contrary to myth, bats aren't blind. In fact, research shows that depending on the circumstances, bats sometimes prefer using eyesight to sound when hunting. And many fruit bats, which drink nectar rather than hunt insects, don't echolocate at all. These species have particularly sharp vision,...
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third and fourth trophic levels
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