instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
Neutrophils provide an early, rapid, and nonspecific defense against invading pathogens.
answer:
What provides an early, rapid, and nonspecific defense against invading pathogens?


question:
Control rods play an important role in the modulation of the nuclear chain reaction.
answer:
What play an important role in the modulation of the nuclear chain reaction?


question:
Negative growth rate results when birth rates fall even lower than death rates.
answer:
What results when birth rates fall even lower than death rates?