Explain how the autoinducer molecule in luminescent bacteria signals when to luminesce

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.

not only is it colder, it also becomes darker, less salty, and more dense.

thats not even an aswer choice