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

[Q]: Aerobic exercise helps improve the cardiovascular system, while anaerobic exercise causes muscles to get bigger and stronger.
[A]: Aerobic exercise helps improve the cardiovascular system, while what exercise causes muscles to get bigger and stronger?


[Q]: All enzymes have an optimal temperature and ph.
[A]: All enzymes have an optimal temperature and what?


[Q]: The pressure of ocean water increases rapidly as the water gets deeper.
[A]:
What property of ocean water increases rapidly as the water gets deeper?