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Quaternary period<span>, Cenozoic </span>era<span>, and Phanerozoic </span>eon<span>.</span>
Answer:
The rivers coming from the northern mountains carry alluvium with them and do the depositional work. In the lower course, due to gentle slope, the velocity of the river decreases which results in the formation of riverine islands.
Explanation:
<em>Jet Streams.</em>
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<em>Hope it can help !!!</em>
