snails breath out carbon dioxide as any other human or animal.
The mouth.
A fish breaths through it's gills.
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You breathe in through your nostrils or mouth, which allows air to enter your respiratory system and reach your lungs where oxygen is absorbed into the bloodstream.
You breathe through your trachea, not your esophagus. The trachea is the tube that carries air to and from your lungs, while the esophagus is the tube that carries food to your stomach.
Its giant sweaty butthole.
They breath air through a hole on the top of their head called a blowhole.
Yes! The shell of a snail is just like our spine. Its true- do not try and remove at anything- the snail would die a slow and painful death!
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.
Ants breathe through their spiracles. These line the side of the thorax, which is the end most/distal body part.