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

Ex Input:
Amount of salt are aquatic biomes often classified.

Ex Output:
How are aquatic biomes often classified?


Ex Input:
It takes about one year for earth to orbit the sun.

Ex Output:
Which of these takes about one year to complete?


Ex Input:
The adult cells that form the butterfly begin growing in embryo developmental stage.

Ex Output:
The adult cells that form the butterfly begin growing in what developmental stage?