macroscopic large enough to be visible, in contrast to microscopic eutrophication in nature, the slow aging process during which a lake, estuary, or bay evolves into a bog or marsh and eventually disappears; in pollution, excess algal growth or blooms due to introduction of a nutrient overload of nutrients, i.e., from un- or poorly treated sewage estuary region of interaction between rivers and near-shore ocean waters, where tidal action and river flow mix fresh-and saltwater (i.e., bays, mouths of rivers, salt marshes, and lagoons); these ecosystems shelter and feed marine life, birds, and wildlife phytoplankton that portion of the plankton community comprised of tiny plants; e.g. algae, diatoms
Marine pollution is the release of by-products of human activity that cause harm to natural marine ecosystems. The pollutants may be sewage, farm waste, toxic chemicals, or inert materials that may smother, choke, or strangle living organisms.
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