the heart
Fish use organs on the sides of their heads called gills. These organs are used to extract oxygen from the water around them, allowing them to breath.
Reptiles breathe by means of their lungs. Their respiratory system is similar to ours in structure.
They use organs called gills that absorb the oxygen from the water. As far as amphibians go, they have both gills and lungs and are able to breath from the water and the atmosphere.
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Ducks use internal lungs to breath.
Crayfish use gills to breath.
All mammals use lungs to breath.
we breath out carbon dixocide but we dont use carbon to breath trees do
All living things have and use organs just like humans. They may have more or less than us but they still have and use organs.
they use oxygen mask to breath so they die in all the smoke
You use your lungs to breath. Your heart pumps the blood round your body (including into and out of the lungs where gas exchange occurs when you breath).