Given a scientific question, generate a correct answer to it.

Ex Input:
What type of pollution comes from sewage, storm drains, septic tanks, boats, and runoff from yards?

Ex Output:
municipal

Ex Input:
Starch and glycogen, as well as simple sugars like glucose and fructose, can all be categorized broadly as what?

Ex Output:
carbohydrates

Ex Input:
What is defined as male gametes that form in the testes and mature in the epididymis?

Ex Output:
sperm