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the excessive growth of alga and hydrophytes in response to the addition of artificial or natural substances, such as nitrates and phosphates, because of fertilizers or sewage being added to an aquatic system. This also results in the depletion of oxygen in the water, which induces reductions in specific fish and other animal populations.
organisms that are unable to produce their own organic food and must therefore obtain nutrients...
gas consisting mainly of methane and carbon dioxide, which is produced as a result of...
regions in particular geographical locations with similar climates and vegetation types.