because they have to let all the bad stuf out
Carbon dioxide
We exhale carbon dioxide or called CO2
We exhale carbon dioxide or called CO2
The primary gas that humans exhale when breathing is carbon dioxide.
CO2 (carbon dioxide).
Monkeys give off carbon dioxide when they exhale - the same as humans do!
Animals exhale carbon dioxide and inhale oxygen just as humans do.
we also exhale water(h2o) along with carbon dioxide. All the constituents of the air we inhale are in the air we exhale. The proportions differ because of the gas exchange in the lungs.
Humans inhale oxygen and exhale carbon dioxide.
Humans breathe in whatever happens to be in the air when they breathe in. If there is carbon dioxide then they will breathe it in as well as nitrogen and oxygen. However they only use the oxygen for respiration so they breathe out everything else with extra carbon dioxide.
It is the product of respiration. Animals including Humans breath in oxygen and exhale Carbon Dioxide
carbon dioxide.carbon-dioxide