Pollution: Causes, Effects and Prevention — Flashcards

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Pollution is when harmful substances like waste, chemicals, or smoke make the air, water, or land dirty and unsafe. These harmful substances are called pollutants. For example, throwing garbage in a r…

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Pollutants are harmful substances that cause pollution. For example, smoke from vehicles is an air pollutant, and plastic waste in rivers is a water pollutant.

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The four main types of pollution are: 1. Air pollution, 2. Water pollution, 3. Noise pollution, and 4. Land pollution.

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Air pollution happens when harmful substances like smoke, gases, and dust mix with the air. For example, smoke from cars and factories pollutes the air we breathe.

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1. Smoke from vehicles like cars and buses. 2. Gases from factories and power plants. 3. Burning of wood, coal, or garbage in open areas.

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Air pollution can cause breathing problems, coughing, asthma, and lung diseases. It can also cause headaches and watery eyes. Long-term exposure can damage the lungs permanently.

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Smog is a thick fog made of smoke and air pollutants. It often occurs in cities like Delhi during winter and makes it hard to breathe. It is dangerous for children and elderly people.

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1. Use public transport, cycle, or walk instead of cars. 2. Plant more trees to clean the air. 3. Use clean fuels like CNG or LPG instead of petrol or wood.