The oxygen comes from pollin and trees make pollin. There is so little pollin though that someone alergect would not become symtomized
Oxygen is an atom. What you breath on a regular basis is O2
When lobsters are underwater they breath in oxygen, when they come above water they breath out carbon dioxide.
lungs they do have lungs they come up to breath
Dolphins go to the surface because they need air (oxygen) to breath and fish can air (oxygen) from the water.
breath in breath out breath in breath out
Earthworms breath by absorbing oxygen through their skin from the moisture in the ground. After heavy rain soaks into the ground it can lose the oxygen in it and the worms can not breath. They come to the surface as not to suffocate. Earthwormsinfo
They come from plants. It is a cycle. (Carbon Dioxide and Oxygen Cycle) When you breathe out you realse Carbon Dioxide and the plants sucks it in and relase oxygen and that is what we breathe in.
animals usually depend on plants for oxygen. we breath out carbon dioxide and breath oxygen in, same with animals. and plants breath that carbon dioxide in and and breath out oxygen.
we breath in oxygen and plants breath co2
We get Oxygen from atmosphere.It is in air we breath.
fish have gills to breath so yeah
Reptiles don't get oxygen from the water. All reptiles have to come up to the surface to breathe, but can hold their breath a long time.