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

[EX Q]: Are humans a new or old species on the earth?
[EX A]: Are humans a new or old species on the earth?

[EX Q]: Sexually do invertebrates reproduce.
[EX A]: How do invertebrates reproduce?

[EX Q]: Replace another in a molecule happens to atoms during a substitution reaction.
[EX A]:
What happens to atoms during a substitution reaction?