Answer:
Positive
Explanation:
All the charges but electron start with their charge letter proton-positive neutron- none electron- negative
I'd say A. Because the only data we have is that at a 5.4 pH level, flies are not welcome.
Hope it helped!
Water because the others are to complex to be diffused with out being digested but water can be diffused as if.
Protiens. They also help control the rate of reactions. The attached picture is the polymer I created if it helps any if you need th elements it is made out of.