Answer :
Answer:
Now i can add a real answer
Explanation:
1: if you think about it you are made up of organs. and then other people will describe yoou as an organism Answer is organism
2:Smallest to biggest= cell-tissue-organ-organism
4:Circulatory/Cardiovascular System through the blood to most parts of the body provides nutrients and oxygen which is needed for our bodies to have ENERGY!
Citation= https://www.joliet86.org/assets/1/6/BODYSYSTEMNotes.pdf