The answer is A. By gemmules
8. is more fertilizers as that is the thing ehich changes everything because without that nothing will change
9. is the colour of light or plant growth i am unsure sorry
Answer
A.
Explanation:
All of them have an a and only two have a B. Thats my best guess
Autoinducer molecules are signalling molecules that need bacteria. In order for the autoinducer molecules to signal, the bacteria must find a way to initiate the signal and a way to respond to the signal it had created. Autoinducer molecules increase in production as the density of the bacteria cell increases.