1. Water Pollution: the contamination of water bodies (e. g. lakes, rivers, oceans, aquifers and groundwater). This form of environmental degradation occurs when pollutants are directly or indirectly discharged into water bodies without adequate treatment to remove harmful compounds.
2. Air Pollution: the presence in or introduction into the air of a substance which has harmful or poisonous effects.
3. Soil Pollution: Soil contamination or soil pollution as part of land degradation is caused by the presence of xenobiotic (human - made) chemicals or other alteration in the natural soil environment.
4. Thermal Pollution: the harmful release of heated liquid into a body of water or heat released into the air as a waste product of a business.
5. Radioactive Pollution: the deposition of, or presence of radioactive substances on surfaces or within solids, liquids or gases (including the human body), where their presence is unintended or undesirable
6. Noise Pollution: harmful or annoying levels of noise. Unwanted sound (noise) can damage psychological and physiological health. Noise pollution can cause hypertension, high stress levels, tinnitus, hearing loss, sleep disturbances, and other harmful effects.
7. Light Pollution: brightening of the night sky caused by street lights and other man - made sources, which has a disruptive effect on natural cycles and inhibits the observation of stars and planets.
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