instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
Eyespots do the cells in the front of a volvox typically develop to help swim towards light.
answer:
What do the cells in the front of a volvox typically develop to help swim towards light?

question:
The action of flushing the toilet, performed multiple times daily, is the single biggest use of water in the home.
answer:
What action, performed multiple times daily, is the single biggest use of water in the home?

question:
When the temperature of water is increased after being used in cooling, it is thermal pollution.
answer:
When the temperature of water is increased after being used in cooling, it is this form of pollution?