7. ENVIRONMENTAL POLLUTION, GLOBAL ENVIRONMENTAL ISSUES AND CONTROL MEASURES
Environmental pollution poses significant health and ecological risks, primarily due to various human activities. Pollution can be categorized into natural and manmade, affecting air, water, and soil. Different types of pollutants, including primary and secondary air pollutants, significantly impact health and the environment, necessitating urgent control measures and preventive strategies.
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What we have learnt
- Environmental pollution is defined as undesirable changes in air, water, and land adversely affecting living organisms.
- Air pollution is categorized into primary and secondary pollutants, each with distinct sources and health impacts.
- Water pollution can arise from industrial effluents and domestic waste, leading to severe ecological consequences.
- Soil pollution primarily results from industrial chemicals and agricultural practices, adversely affecting plant and animal health.
Key Concepts
- -- Air Pollution
- Imbalance in air quality due to harmful pollutants affecting living organisms.
- -- Water Pollution
- Contamination of water bodies caused by harmful substances such as sewage and industrial waste.
- -- Soil Pollution
- Accumulation of toxic compounds in soil that negatively impacts plant growth and animal health.
- -- Primary Pollutants
- Pollutants emitted directly into the atmosphere, such as carbon monoxide and sulfur dioxide.
- -- Secondary Pollutants
- Pollutants formed through reactions between primary pollutants, such as ozone and smog.
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