instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
Plankton is the most common life form in the ocean.
answer:
What is the most common life form in the ocean?

question:
Circannual behavioral rhythms are linked to the yearly cycle of seasons.
answer:
What type of behavioral rhythms are linked to the yearly cycle of seasons?

question:
Decibel is the term used to measure the intensity of sound waves.
answer:
What is the term used to measure the intensity of sound waves?