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: The second step in eukaryotic cell division is division of nucleus part of the cell.

Answer: The second step in eukaryotic cell division is division of which part of the cell?


Question: Glaciers deposit their sediment when they melt.

Answer: When do glaciers deposit their sediment?


Question: A volcanic arc is formed when a subducting plate flows under another tectonic plate.

Answer:
What is formed when a subducting plate flows under another tectonic plate?