TASK DEFINITION: Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
PROBLEM: Resistors connected end to end are said to be in series.

SOLUTION: Resistors connected end to end are said to be in what?

PROBLEM: Natural resource type of resource is limited in supply and cannot be replaced except over millions of years.

SOLUTION: What type of resource is limited in supply and cannot be replaced except over millions of years?

PROBLEM: Sexual reproduction with gametes and fertilization produces diploid sporophyte.

SOLUTION:
What does sexual reproduction with gametes and fertilization produce?