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The presence of fertile Doabs in the plains of the Ganga and its tributaries shows what?

Answer and explanation

Correct answer: River systems deeply influence land use

The direct answer is A: river systems deeply influence land use. A doab is land between two rivers, and repeated deposition of alluvium can make it fertile. Fertile, level land usually attracts farming, settlements, roads and other human activities. Step by step: rivers transport sediments; sediments are deposited on the plain; the deposited alluvium improves soil fertility; people use the productive land for cultivation and settlement. Therefore, fertile doabs show that river systems strongly shape how land is used. Option A is correct because it connects rivers, soil fertility and human use. Option B is wrong because plateau minerals are not the main explanation for fertile alluvial doabs or ordinary farming there. Option C is wrong because sea tides do not cause the fertility of inland Ganga plains. Option D is wrong because glaciers may supply sediments in the wider river system, but they do not directly make soil in every field. The important idea is the combined effect of river flow, deposition and human response. Memory cue: rivers bring alluvium; alluvium supports farming; farming influences land use.

Related tags

DoabGanga TributariesLand Use

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