EVERYDAY SCIENCE

Detailed explanation-1: -Sewage disposal is a major form of coastal pollution throughout the world. Sewage outfalls near coastal communities release human waste as well as other organic matter, heavy metals, pesticides, detergents, and petroleum products.

Detailed explanation-2: -Most ocean pollution begins on land. When large tracts of land are plowed, the exposed soil can erode during rainstorms. Much of this runoff flows to the sea, carrying with it agricultural fertilizers and pesticides. Eighty percent of pollution to the marine environment comes from the land.

Detailed explanation-3: -Human activities that generate domestic sewage and toxic waste cause water pollution by contaminating water with disease-causing microorganisms and poisonous substances. Oil spills are another source of water pollution that have devastating impacts on surrounding ecosystems.

Detailed explanation-4: -Industrial Waste Industrial waste is one of the biggest sources of water contamination. Many industrial sites produce waste in the form of toxic chemicals and pollutants, and some don’t have proper waste management systems in place. Sometimes, industrial waste is dumped into nearby freshwater systems.

Detailed explanation-5: -pollution caused by industrial wastewater can increase the murkiness of water, as a result of which the sunli ght is unable to reach the bottom of the water bodies. Marine plants inhabiting the bottom layers are thus unable to carry out the process of photosynthesis.