Oxygen
Elodea plant leaves release large amounts of oxygen into the water.
hi, as we breath in we breath in about 20% oxygen, we breath out 16%.. we only use about 4% of the oxygen we breath in..
there is no such thing because we breath oxygen and breath out carbon dioxide
we breath in oxygen and breath out carbon dioxide.
breath in breath out breath in breath out
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.
Photosynthesis occurs and oxygen bubbles are produced.
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
Yes. All humans breath a type of air called oxygen. Without oxygen we would die.