The clean river with clear water looks healthy. Too many plants create a “green blanket,” reducing oxygen, harming fish and making water unsafe. This happens due to fertilizers flowing into the river.
Class 5 Our Wondrous World Chapter 2 Journey of a River NCERT solutions
Class 5 Our Wondrous World – The World Around Us – Chapter 2 Journey of a River question answer
A healthy river has clear water and balanced aquatic life. When fertilizers from farms enter rivers, they cause plants and algae to grow rapidly, covering the surface in a green layer. This “green blanket” blocks sunlight, reduces oxygen and suffocates fish and aquatic life. It also makes the water unsafe for people. Controlling fertilizer use and runoff can help maintain river health.
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