Question

what is gills why human being can not gills ​

Answer 1

Answer:

Human lungs are not designed to extract oxygen from water to be able to breath underwater. ... Instead, by passing the water through their specialized organs (called gills), they can remove the oxygen and eliminate waste gases. Since humans do not have gills, we cannot extract oxygen from water.

Gills

the paired respiratory organ of fish and some amphibians, by which oxygen is extracted from water flowing over surfaces within or attached to the walls of the pharynx.

Answer 2

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➽ Gills are evaginated respiratory surfaces used for breathing in water. Gills are present in all amphibian larvae and in some aquatic salamanders. They are typically highly branched structures.

➽ Human lungs are not designed to extract oxygen from water to be able to breath underwater. ... Instead, by passing the water through their specialized organs (called gills), they can remove the oxygen and eliminate waste gases. Since humans do not have gills, we cannot extract oxygen from water.