Given a scientific question, generate a correct answer to it.

[EX Q]: What is the term for a loop in which a product feeds back to control its own production?
[EX A]: feedback mechanism

[EX Q]: A pedigree is a chart which shows the inheritance of a trait over several what?
[EX A]: generations

[EX Q]: Peregrine falcons made an incredible recovery after laws were passed banning the use of what?
[EX A]:
ddt