Question

What could be the reasons behind the
formation of swamps in the extensive
continental location of Pantanal?​

Answer 1

Answer:

Water from the Planalto highlands flows into the gradually-sloped, large depression of Pantanal. From there, the water flows out as the Paraguay River and its tributaries. The Pantanal forms a vast swampy area as a result of deposits from the several rivers and water systems flowing into it.

Explanation:

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Answer 2

$:\implies$ When the river is flooding, a large amount of sediment comes out with the flow. Heavy sediments are found towards the bottom of the river while suspended particles are scattered all over. It means that Pantanal is formed due to the work of the river Paraguay and its tributaries.