Three facts about the respiratory system?

Three facts about the respiratory system?I have a HUGE project in science where we have to study the skeletal, muscular, respiratory, digestive, urinary, blood, circulatory, endocrine, immune, and nervous systems! I need answers ASAP!

Posted by ElectroX
hmm..Dear it's been a while since I left science class.LOL

-Respiratory system is the process of breaking up(while breathing) food into energy used for activities.
-It is used for breathing.LOL

Sorry couldn't remember the other.

Peace!

What do you think? Answer below! Facts and information on the human digestive system including how it works and related digestion health problems.

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