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: Competive exclusion princple explains why two different species cannot occupy the same niche in the same place for very long.

Answer: What explains why two different species cannot occupy the same niche in the same place for very long?


Question: Under a crushed sugar cube is added and the water is stirred conditions would a sugar cube dissolve most quickly when placed in a liter of water at room temperature.

Answer: Under which conditions would a sugar cube dissolve most quickly when placed in a liter of water at room temperature?


Question: Mantle is the layer of tissue between the body and shell.

Answer:
What is the layer of tissue between the body and shell called?