EVS for Class 4 (Our Wonderous World: New NCERT) FAQs
1. What is the importance of biodiversity in our world? |
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Ans.Biodiversity refers to the variety of life on Earth, including different species of plants, animals, and microorganisms. It is important because it helps maintain balance in ecosystems, supports food security, provides resources for medicines, and contributes to cultural and recreational aspects of life.
2. How do plants contribute to the environment? |
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Ans.Plants play a vital role in the environment by producing oxygen through photosynthesis, providing habitat and food for various organisms, preventing soil erosion, and regulating the water cycle. They also help in maintaining climate stability.
3. What are renewable resources, and why are they important? |
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Ans.Renewable resources are resources that can be replenished naturally over time, such as sunlight, wind, and water. They are important because they provide sustainable energy options, reduce reliance on fossil fuels, and help combat climate change.
4. How can we conserve water in our daily lives? |
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Ans.We can conserve water by using it wisely, fixing leaks, taking shorter showers, turning off the tap while brushing teeth, collecting rainwater, and using water-efficient appliances. These practices help in reducing water wastage.
5. What are some common sources of pollution? |
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Ans.Common sources of pollution include industrial waste, vehicle emissions, plastic waste, agricultural runoff, and household chemicals. Pollution can harm the environment and affect human health, making it crucial to reduce and manage waste properly.
6. How does deforestation impact wildlife? |
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Ans.Deforestation leads to the loss of habitat for many species, which can result in endangerment or extinction. It disrupts ecosystems, decreases biodiversity, and affects the food chain, ultimately harming wildlife populations.
7. What is the role of animals in maintaining ecological balance? |
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Ans.Animals play various roles in ecosystems, such as pollinators that help plants reproduce, predators that control prey populations, and decomposers that break down organic matter. These interactions help maintain ecological balance and health.
8. Why is it essential to protect endangered species? |
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Ans.Protecting endangered species is essential because they play critical roles in their ecosystems. Their extinction can lead to imbalances, loss of biodiversity, and disruption of food webs, which can affect other species, including humans.
9. What are some ways to reduce plastic waste? |
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Ans.We can reduce plastic waste by using reusable bags, bottles, and containers, avoiding single-use plastics, recycling whenever possible, and supporting products with minimal packaging. These actions help reduce environmental pollution.
10. How does climate change affect our planet? |
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Ans.Climate change leads to rising temperatures, changing weather patterns, melting ice caps, and increased frequency of extreme weather events. These changes can negatively impact ecosystems, agriculture, water supply, and human health.
11. What are the benefits of recycling? |
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Ans.Recycling helps conserve natural resources, reduces waste in landfills, saves energy, and decreases pollution. It also promotes a circular economy by reusing materials, which can lead to environmental sustainability.
12. How can children contribute to environmental conservation? |
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Ans.Children can contribute by learning about the environment, participating in clean-up drives, planting trees, saving water and electricity, and spreading awareness about environmental issues among friends and family. Every small action counts.
13. What is an ecosystem, and what are its components? |
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Ans.An ecosystem is a community of living organisms interacting with their physical environment. Its components include biotic factors (plants, animals, microorganisms) and abiotic factors (soil, water, air, sunlight) that work together to sustain life.
14. Why is soil important for our environment? |
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Ans.Soil is crucial for plant growth, which in turn supports animals and humans. It acts as a natural filter for water, stores nutrients, and plays a role in the carbon cycle, making it essential for maintaining healthy ecosystems.
15. What is the significance of wildlife conservation? |
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Ans.Wildlife conservation is significant because it helps protect species from extinction, preserves biodiversity, and ensures the health of ecosystems. It also maintains natural resources for future generations and supports ecological balance.