Answer:
I would say because they're in a set of triplets? This is because there are three babies that are born from the same mother on the same day, and two of those babies would be born on the same day... but they would have to be twins... so it isn't possible unless they are triplets.
The main factor that controls the rate of breathing is..
A.) concentration of carbon dioxide.
If we think about it.. When we breath in oxygen, right away it enters your lungs and turns into carbon dioxide. Well since your lungs need to process oxygen and bring oxygen into the blood stream. Then as soon as the oxygen comes inside (inhale) the oxygen turns into carbon dioxide and you breath it out (exhale) to get a new oxygen load.
Makes sense? lol
Good Luck! :)
