Answer: increased
Explanation: the more you have the better you can tell where something is acting on you, ie touch
I think you forgot to give the options along with the question. I am answering the question based on my knowledge and research. "RNA" is the other kind of molecule that can act as a catalyst for chemical reactions. I hope that this is the answer that you were looking for and the answer has come to your help.
Two diverse species naturally breed an offspring, and selective preserves raver new traits in a given environment, (they evolve).
I hope this helps.=^⊃