How do fish adapt to their aquatic habitat?

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They have lungs to breathe air

They have gills to extract oxygen from water

They have strong legs to walk on the bottom of the ocean

They have fur to keep warm

answer is B.

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Detailed Solution

The correct answer is that they have gills to extract oxygen from water.

Fish extract oxygen from the water through their gills. Gills are thin, feathery structures that are located on either side of the fish's head. As water passes over the gills, oxygen is extracted and carbon dioxide is released. This process allows the fish to breathe underwater. Unlike humans, fish do not have lungs and cannot breathe air. Some fish, such as lungfish and catfish, have adapted to have both gills and lungs to survive in low-oxygen environments.

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