Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
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Question: Once a plant cell becomes specialized, divide can they no longer do.

Answer: Once a plant cell becomes specialized, what can they no longer do?

Question: The pressure of ocean water increases rapidly as the water gets deeper.

Answer: What property of ocean water increases rapidly as the water gets deeper?

Question: In weather terms, the boundary between two air masses is called front.

Answer:
In weather terms, what do you call the boundary between two air masses?