TASK DEFINITION: Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
PROBLEM: You see a faster reaction rate when the concentration of reactants is higher.

SOLUTION: What kind of reaction do you see when the concentration of reactants is higher?

PROBLEM: Children most likely inherit shape of earlobes from their parents.

SOLUTION: Which trait do children most likely inherit from their parents?

PROBLEM: Remains unchanged happens to the mass number during a nuclear decay process by positron emission.

SOLUTION:
What happens to the mass number during a nuclear decay process by positron emission?