instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
Spring tides are created when the sun and moon's tides match.
answer:
Which type of tides are created when the sun and moon's tides match?

question:
Deletions remove one or more nucleotides from the dna
answer:
Deletions remove one or more what from the dna?

question:
Diffusion is the process in which a substance naturally moves from an area of higher to lower concentration.
answer:
What is the process in which a substance naturally moves from an area of higher to lower concentration called?