Question

what do you think happen when river and sea are collide​

Answer 1

Answer:

When river water meets sea water, the lighter fresh water rises up and over the denser salt water. Sea water noses into the estuary beneath the outflowing river water, pushing its way upstream along the bottom. Often, as in the Fraser River, this occurs at an abrupt salt front.

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Answer 2

Answer:

Same ans as upper one....