Oxygen was produced in suns when extreme temperatures cause hydrogen plamsa to change into other elements.
But you have phrased the question badly and want to know where it comes from, plants use carbon dioxide to make oxygen (and glucose) which animals use.
Trees that intake CarbonDioxidespit out Oxygen
Animals breathe in oxygen in the air.
Plants breathe in carbon dioxide and breathe out oxygen; animals breathe in oxygen & breathe out carbon dioxide.
Animals do not use up all the oxygen in the atmosphere because plants produce oxygen. When they breathe, plants inhale carbon dioxide (which is what animals breathe out) and exhale oxygen (which is what animals breathe in).
Snails do not produce oxygen. They breathe air like other terrestrial animals, but their respiration process is different as they have a primitive respiratory system.
There is no oxygen. Animals need oxygen to breathe. Plus, no food or water.
Penguins breathe in oxygen and breathe out carbon dioxide. They have this in common with all animals.
The oxygen we breathe is contained in the Earth's atmosphere, which consists of approximately 21% oxygen. This oxygen is produced through photosynthesis by plants and other organisms.
Animals breathe in oxygen from the air through their respiratory system. They use oxygen to fuel their cells and produce energy through a process called cellular respiration. Then, they release carbon dioxide, a waste product, back into the air when exhaling.
no because we as humans are like animals, they gotta die sometime! i hope that answers your question. Thank you. Alternate answer: Unless an animal is suffering from some sort of oxygen deficiency, animals cannot live longer if they breathe more oxygen. They normally breathe plenty of oxygen.
Mold does not "breathe" in the same way animals do. Instead, mold obtains nutrients through absorbing organic matter from its environment. Mold requires oxygen for growth, but it doesn't "breathe" oxygen in the same way that animals do.
You take it oxygen that the plant has produced.