Class 9 Exam > Class 9 Videos > L2 - Air Pollution - Natural Resources, Class 9, Science
L2 - Air Pollution - Natural Resources, Class 9, Science Video Lecture
FAQs on L2 - Air Pollution - Natural Resources, Class 9, Science Video Lecture
| 1. What are the main sources of air pollution? |  |
Ans. The main sources of air pollution include emissions from industries, vehicles, burning of fossil fuels, agricultural activities, and household activities like cooking and heating with solid fuels.
| 2. How does air pollution affect human health? | |
Ans. Air pollution can have severe health impacts on humans. Breathing in polluted air can lead to respiratory problems, such as asthma and bronchitis, and can also increase the risk of cardiovascular diseases and lung cancer. Prolonged exposure to air pollution can even shorten life expectancy.
| 3. What are the environmental impacts of air pollution? | |
Ans. Air pollution has significant environmental impacts. It can harm plant and animal life, leading to biodiversity loss. Pollutants like nitrogen oxides and sulfur dioxide can cause acid rain, which damages forests, lakes, and other ecosystems. Air pollution also contributes to climate change by increasing the levels of greenhouse gases in the atmosphere.
| 4. How can we reduce air pollution? | |
Ans. There are several ways to reduce air pollution. We can promote the use of renewable energy sources like solar and wind power, which produce minimal air pollutants. Encouraging the use of public transportation and electric vehicles can help reduce emissions from vehicles. Implementing stricter emission standards for industries and promoting energy-efficient practices in households can also contribute to reducing air pollution.
| 5. What are the long-term effects of air pollution on the environment? | |
Ans. Long-term effects of air pollution on the environment include the degradation of ecosystems, loss of biodiversity, and climate change. Acid rain caused by air pollution can damage forests and bodies of water, harming plants, animals, and aquatic life. The accumulation of greenhouse gases in the atmosphere leads to global warming and climate change, resulting in rising sea levels, extreme weather events, and disruptions to ecosystems.
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