D oxygen there was no free oxygen on the earth
Answer:
a d*ck and a yk what-
Explanation:
no need for me to say more,
The best description about the brain stem is: it is the most important organ of our body's survival. It connects the brain and the spinal cord, controls the vital organs like the lungs and heart and it also coordinates the many essential body reflexes.
They are reactants because they are present before the reaction
If going to be the first one home boy
