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Role of Forests in Maintaining Water Table Video Lecture | Science Class 7 (Old NCERT)
FAQs on Role of Forests in Maintaining Water Table Video Lecture - Science Class 7 (Old NCERT)
| 1. What is the role of forests in maintaining the water table? |  |
Ans. Forests play a crucial role in maintaining the water table. The roots of trees help to hold the soil together, preventing erosion and allowing rainwater to seep into the ground. This process helps in recharging groundwater and maintaining the water table.
| 2. How do forests contribute to the water cycle? | |
Ans. Forests contribute to the water cycle in multiple ways. They absorb rainwater through the canopy and leaves, reducing the impact of heavy rainfall on the ground. Trees also release moisture through transpiration, which increases humidity and promotes cloud formation. This, in turn, leads to rainfall, ensuring the continuous movement of water in the water cycle.
| 3. Can deforestation affect the water table? | |
Ans. Yes, deforestation can have a significant impact on the water table. When forests are cleared, the absence of tree roots leads to increased soil erosion and reduced water infiltration. As a result, rainwater runs off the surface, causing flash floods and reducing groundwater recharge. This can ultimately lead to a decline in the water table.
| 4. How do forests act as natural water filters? | |
Ans. Forests act as natural water filters by trapping sediments, nutrients, and pollutants. When rainwater passes through the forest floor, the vegetation and soil absorb and retain these substances, preventing them from reaching water bodies. This filtration process helps to maintain water quality and protects freshwater ecosystems.
| 5. What are the consequences of a declining water table due to deforestation? | |
Ans. A declining water table due to deforestation can have several consequences. It can lead to reduced water availability for human consumption, agriculture, and industrial purposes. It can also affect the survival of aquatic plants and animals, disturb the balance of ecosystems, and increase the risk of droughts. Additionally, a lower water table can cause land subsidence and sinkholes in certain areas.
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