TASK DEFINITION: Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
PROBLEM: Unlike ammonia, oxygen cannot be liquefied at room temperature because its critical temperature is below room temperature.

SOLUTION: Unlike ammonia, oxygen cannot be liquefied at room temperature because its what is below room temperature?

PROBLEM: Absorption is the process by which the substances you consume are taken up by the blood.

SOLUTION: What is the process by which the substances you consume are taken up by the blood?

PROBLEM: Sutural bones are found in the skull.

SOLUTION:
In what area of the body are sutural bones found?