Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Humans have 23 pairs pairs of chromosomes.
How many pairs of chromosomes do human have ?

Newts drop their tails when threatened of the following is an example of an escape strategy that is used to avoid being killed and eaten by predators.
Which of the following is an example of an escape strategy that is used to avoid being killed and eaten by predators?

Positive feedback loops intensifies the response during homeostasis.
What intensifies the response during homeostasis?