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

Example Input: A covalent network solid is a compound in which all of the atoms are connected to one another by covalent bonds.
Example Output: What is a compound in which all of the atoms are connected to one another by covalent bonds?

Example Input: Pyramid ecosystem is used to show energy flow through the trophic levels.
Example Output: What is used to show energy flow through the trophic levels?

Example Input: The love canal tragedy was an infamous example of industrial waste dumping.
Example Output:
Love canal was an infamous example of what type of pollution?