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

Water affects the availability of oxygen important element in aquatic environments and in flooded soils.
Water affects the availability of what important element in aquatic environments and in flooded soils?

Demagnetization is the process in which a magnet loses its magnetic properties.
What is the process called in which a magnet loses its magnetic properties?

Robert merrifield developed the first synthetic approach for making proteins essential cell substances in the lab.

Robert merrifield developed the first synthetic approach for making what essential cell substances in the lab?