TASK DEFINITION: Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
PROBLEM: Negative growth rate results when birth rates fall even lower than death rates.

SOLUTION: What results when birth rates fall even lower than death rates?

PROBLEM: Wilting occurs when water lost by transpiration is not replaced by absorbtion from room.

SOLUTION: What occurs when water lost by transpiration is not replaced by absorbtion from room?

PROBLEM: Like a runner passing a baton, the transmission of nerve impulses between neurons depends on neurotransmitters.

SOLUTION:
Like a runner passing a baton, the transmission of nerve impulses between neurons depends on what?