Question

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fish can't breathe outside water .​

Answer 1

Answer:

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the projections on the gills float, so each is surrounded with water from which it can absorb oxygen. On land, these all collapse together, blocking most of the surface area. So they don't work well and the fish suffocates. Lungs increase surface area by having many tiny pockets, which don't collapse in air.

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I hope this helps you.....

Answer 2

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• the projections on the gills float, so each is surrounded with water from which it can absorb oxygen. On land, these all collapse together, blocking most of the surface area. So they don't work well and the fish suffocates. Lungs increase surface area by having many tiny pockets, which don't collapse in air.