The air you breathe out is carbon dioxide.
if we cut down all the trees we will not be able to breathe and when we breathe out the trees absorb the bad stuff and then make it clean again to breathe
Yes they do and all mammals do. Reptiles and birds and stuff have something called a diaphragm. So humans and lions and all other mammals have lungs!
The air we breathe out contains a lot of stuff and the list would be exhaustive, but the main components in the air we breathe out are nitrogen, oxygen, carbon dioxide, and water vapor.
The air doesn't change much from day to night, so we Breathe the same stuff at night as during the day.
One must breathe in with your olfactory sensor; on the human, that is the nose.
photosynthesis
Where did you hear that from? They actually breathe from slits on the side of their body. They couldn't breathe with stuff on their feet that they have walked through otherwise.
The gas you breathe in from the air is called oxygen.
because stuff
When you breathe out, you release a gas called carbon dioxide. This waste product is produced by your body's cells during the process of respiration and is expelled during exhalation.
you breathe in something called oxygen and then breathe out something called carbon dioxide. Inside your body the oxygen gets running through your blood vessels ans heart and muscles. then even though you breathe in a bit of carbon dioxide- you breathe more out than in! :)