It released such as poop and children
Answer:
They give out air and they absorb carbon dioxide
1. mouth, esophagus, stomach, small intestine, large intestine, rectum and anus.
2. Digestion, absorption, and elimination
6. Physical is when the food is physically broken down. (Chewing of the mouth) chemical is with the help of substances
I think it might be the 3rd one, I don't know tho.