TASK DEFINITION: Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
PROBLEM: Mechanical waves term describes waves that travel through matter.

SOLUTION: What term describes waves that travel through matter?

PROBLEM: A(n) genome is considered to be a person's entire genetic information.

SOLUTION: What is considered to be a person's entire genetic information?

PROBLEM: Replace another in a molecule happens to atoms during a substitution reaction.

SOLUTION:
What happens to atoms during a substitution reaction?