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Environmental Issues in One Shot (Old NCERT) Video Lecture | Biology Class 12 - NEET

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FAQs on Environmental Issues in One Shot (Old NCERT) Video Lecture - Biology Class 12 - NEET

1. What are some major environmental issues?
Ans. Major environmental issues include climate change, deforestation, pollution (air, water, and soil), loss of biodiversity, and depletion of natural resources.
2. How does climate change impact the environment?
Ans. Climate change leads to rising global temperatures, melting of polar ice caps, sea-level rise, extreme weather events, changes in precipitation patterns, and disruption of ecosystems. These impacts result in the loss of habitats, increased species extinction, and threats to human health and livelihoods.
3. What are the causes of deforestation?
Ans. Deforestation is primarily caused by human activities such as logging, agriculture expansion, urbanization, and infrastructure development. Other indirect causes include illegal logging, forest fires, and the demand for wood products.
4. What are the sources of pollution?
Ans. Pollution can originate from various sources. Air pollution sources include industrial emissions, vehicle exhaust, and burning of fossil fuels. Water pollution sources include industrial waste, sewage, and agricultural runoff. Soil pollution can result from improper waste disposal, use of pesticides, and industrial activities.
5. How does the loss of biodiversity affect ecosystems?
Ans. Loss of biodiversity disrupts the delicate balance within ecosystems. It can lead to reduced ecosystem productivity, increased vulnerability to invasive species, disruption of food chains, and decreased resilience to environmental changes. This loss also affects the availability of ecosystem services, such as pollination, nutrient cycling, and water purification, which are vital for human well-being.
158 videos|393 docs|239 tests

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