Pollutant
A pollutant is any substance or energy introduced into the marine environment that has harmful effects on living organisms and the natural environment. Pollutants can come from a variety of sources, including industrial and agricultural activities, sewage treatment plants, oil spills, and atmospheric deposition. They can be in the form of chemicals, such as heavy metals, pesticides, and petroleum products, or physical agents, such as noise and light. Pollutants can have a range of negative impacts on marine ecosystems, including reduced water quality, harm to fish and other aquatic organisms, and damage to habitats such as coral reefs and seagrass beds.
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