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How Much Water is Available? Video Lecture | Class 7 Oxford Science: Chapter Notes, Worksheets & Tests
FAQs on How Much Water is Available? Video Lecture - Class 7 Oxford Science: Chapter Notes, Worksheets & Tests
| 1. What percentage of the Earth's water is freshwater? |  |
Ans. Only about 2.5% of the Earth's total water is freshwater. This small percentage is essential for drinking, agriculture, and sustaining ecosystems, while the majority, approximately 97.5%, is saltwater found in oceans.
| 2. How much of the Earth's freshwater is accessible for human use? | |
Ans. Out of the 2.5% of freshwater, approximately 1% is easily accessible for human use. The rest is trapped in glaciers and ice caps, or deep underground and not readily available for consumption or irrigation.
| 3. What are the main sources of freshwater available to us? | |
Ans. The main sources of freshwater include rivers, lakes, reservoirs, and groundwater aquifers. These sources are critical for providing water for drinking, irrigation, and industrial uses.
| 4. How does climate change affect the availability of freshwater? | |
Ans. Climate change can lead to altered precipitation patterns, increased evaporation rates, and more severe droughts or floods, all of which can significantly impact the availability and distribution of freshwater resources.
| 5. What are some effective ways to conserve freshwater? | |
Ans. Effective ways to conserve freshwater include using water-efficient appliances, fixing leaks, practicing mindful water usage in daily activities, and implementing rainwater harvesting systems to reduce reliance on traditional water sources.
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