Why do we breathe?

Question

just wondering

Answer 1

Us Human breathe in air! exhale carbon dioxide!

that plants use in the enviroment! compound chemicals happen in nature to reward us! with fresh clean air that we can breathe!

Answer 2

Without breathing we cannot take in oxygen and exchange gases (blood gases) ... the heart will not pump efficiently without enough oxygen...and if the heart does not pump how to the vital organs (brain, liver, pancreas, the heart itself, get good 'oxygenated blood'...without circulating are bodies will not function. ...think of it this way if you know CPR...there is a term called the ABC's (airway, breathing, circulation)...if we don't have an airway to breath how can we circulate the blood to help our bodies function so we can continue to function and live..just a thought...so just breath....lol

Answer 3

So that you can live and ask random questions on yahoo answers =)

Answer 4

To live

Answer 5

because our bodies need mitosis.