how do fish respire????
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Answers
Answer:
They respire with the help of their gills..
Not, Cheated from Google...
Answer:
Dear frnd this answer is in my book
Explanation:
Instead of breathing air, fish must get their oxygen from the water. This process requires large volumes of water to pass through absorption surfaces to get enough oxygen into their bodies using their mouths and gills. ... This carbon dioxide will then be carried out of the bodies through the gillsIf the skin on the gills is thin, this also helps. The blood passing through the gills is pumped in the opposite direction of the water flowing over the gills. This allows the blood oxygen level to be less than the oxygen level in the water. Oxygen will always want to move to wherever lacks oxygen, this is also known as diffusion. The oxygen can then attach to hemoglobin, a protein in red blood cells that distributes oxygen throughout the body.
When the oxygen moves throughout the fish’s body, it can then diffuse into areas that have too much carbon dioxide. This carbon dioxide will then be carried out of the bodies through the gills. Just like how we breathe out carbon dioxide! Even though we are so different from fish, we still have the same basic anatomical functions!