Answer:
1. Im not sure but I think the final stage for the food is on the bladder or long intestine where waste can be transported to our anus. Or if it say the food nutrients the final stage will be in short intestine and transported to blod cells again.
2. energy and nutrients can be transported with the help of blood cells who carried them, that will be distributed to all parts of the body.
3. by breathing the air the oxygen enter to our nose and travel to our lungs.
4. oxygen can reach to our different parts of the body when we inhale the lungs work and pump it to the heart where heart pump the blood cells, the blood cells will be the carrier and it will be distributed to our body.
Explanation:
that's all I hope it can help
