Answer:
they can form complex organ systems.
Answer:
which best describes the main role of adenosine triphosphate (ATP)? It's purine derivative created from the breakdown of fuel molecules, that transfers energy for cellular processes. ... They are polymers of subunits containing a phosphate group, a sugar, and a purine or pyrimidine base.
Explanation:
Clique i think.. hope this helps. pls let me know if it's incorrect
A phrase to describe a negative feedback loop could be: self-regulating (though I'm not sure the exact word you're looking for).
