Which of the following best defines a delta?
The correct option is (A) A landform created at a river’s mouth by deposited sediments. A delta forms at a river’s mouth where sediments accumulate, creating fertile, flat land. Famous deltas include the Ganga-Brahmaputra delta, supporting diverse ecosystems and significant agriculture due to nutrient-rich soil.
Class 6 Social Science Chapter 3 Landforms and Life question answer
Class 6 NCERT Social Science India and the World: Land and the People Chapter 3 Landforms and Life
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Deltas are created as rivers deposit sediments at their mouths, forming fertile land ideal for agriculture. Examples like the Ganga-Brahmaputra delta support rice and other crops, benefiting from nutrient-rich soil. Deltas sustain diverse ecosystems, including mangroves, and are vital for fishing, agriculture, and local livelihoods. Their strategic location at river-ocean junctions promotes unique biodiversity, while high sedimentation rates create lands that are crucial for regional economies and food production.
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