a: animals evolved from simpler forms
Answer:
Two of the same molecules can not connect. I hope this is right...
I think its about 28 days total so close to 30??
Cause living things can not directly use most of matter which they found in nature. For example carbon, all organism use carbon in complex structure, that is in compound or macromolecule(glucose,fructose,amino acid). we can not directly earn ATP from C which we found in soil/other sources.
