I’m pretty sure the answer is
↳ To transport materials throughout the body!
Multicellular organisms need a circulatory system to transport substances to and from their cells!
There you go! I hope this helped, if there’s anything just let me know! ☻
Answer:
Answer is 2nd
Explanation:
some energy is transformed into mass
Science,math,art,technology,engineering
For the first two
1. Will only give up one atom to be stable
2. Only 2 atoms