A fish breaths through it's gills.
They have two little holes above their beak, and that is their nose. They breathe through that usually, unless they have been out in the heat...then sometimes they pant, like a dog, a bit.
It filters the water out. Basically the 'breath in' water and take the oxygen from it and the water filters out through the gills
Some spiders and insects that live in part underwater carry air bubbles with them to breathe through.
Because they have fins and not legs. And they breathe water and not air.
There are many ways in which an animal is part of the carbon cycle. Animals breathe out carbon dioxide that plants breathe in.
The mouth.
They breath air through a hole on the top of their head called a blowhole.
Fish gills are the equivalent of human lungs. Our lungs, and the fish's gills, are the part of the body that absorb the oxygen we need and expel the carbon dioxide that we nave to get rid of. The way that this happens is through the blood vessels (arteries carry oxygen-rich blood around the body, while veins carry deoxygenated blood) Humans extract oxygen from the air that they breathe into their lungs, while fish obtain their oxygen from the water that passes through their gills.
Their lungs and diaphragm
The genitals
They have two little holes above their beak, and that is their nose. They breathe through that usually, unless they have been out in the heat...then sometimes they pant, like a dog, a bit.
The DNA is homogenous through-out the entire body of the fish (or all creatures for that matter). What you should be asking is 'which part of the fish's genome do you mix with your own DNA to become a mermaid?'
Ants breathe through their spiracles. These line the side of the thorax, which is the end most/distal body part.
No. Fish are not part human. Fish and humans are both made of cells and DNA, but they are also very, very different. For instance, fish can breathe underwater and humans can't. Humans can live outside of the water, and fish can't.
lungs
its body
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