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

Example Input: Herbivores is the term for animals that eat producers to get energy.
Example Output: What is the term for animals that eat producers to get energy?

Example Input: During the early paleozoic, the amount of carbon dioxide in the atmosphere was much greater compared to today.
Example Output: During the early paleozoic, the amount of carbon dioxide in the atmosphere compared to today was?

Example Input: Homes and transportation use half (fifty) percent of all energy in the u.s.
Example Output:
Homes and transportation use what percent of all energy in the u.s.?