NCERT Solutions for Class 7 Science Chapter 17
Important NCERT Questions
7th Chapter 17 Forests: Our Lifeline
NCERT Books for Session 2022-2023
CBSE Board and State Board
Questions No: 2
Explain how forests prevent floods.
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Forest acts as a natural absorber of rainwater and allows it to seep. When rainwater falls on leaves of trees and plants, it does not fall directly on the ground. It drips slowly on the forest ground (does not stagnate) and hence prevent floods.
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Forests act as natural shields against floods by absorbing rainfall and controlling water flow. Trees and plants in forests soak up water, slowing down its movement and enabling it to seep into the soil. Their roots prevent soil erosion, maintaining riverbank stability and reducing sedimentation in waterways. By regulating the release of water gradually, forests manage river levels, lessening flood risks downstream. Additionally, forests along rivers serve as flood buffers, absorbing and storing excess water, minimizing the impact of floods on surrounding areas.