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

Example Input: Microscopes were first developed in the early 1600s by eyeglass makers.
Example Output: Microscopes were first developed in the early 1600s by this trade?

Example Input: The core of a star collapses during a supernova, forming a neutron star.
Example Output: The core of a star collapses during what event, forming a neutron star?

Example Input: Diffusion is an effective transport mechanism over the spatial scales typically found at cellular level.
Example Output:
Diffusion is an effective transport mechanism over the spatial scales typically found at what level?