TASK DEFINITION: Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
PROBLEM: Socket secures teeth in the mouth.

SOLUTION: What secures teeth in the mouth?

PROBLEM: Ecological pyramids can demonstrate the decrease in energy, biomass or numbers within an ecosystem.

SOLUTION: What can demonstrate the decrease in energy, biomass or numbers within an ecosystem?

PROBLEM: Electrical wires are usually covered with plastic or rubber to insulate the electrical wire.

SOLUTION:
Which of the following best explains why electrical wires are usually covered with plastic or rubber?