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

Input: Consider Input: Bile salts produced by the liver assist in breaking apart what kind of fats?

Output: dietary

Input: Consider Input: Which part of the body has mucus and hair to trap dust and also warms and moistens air so to not harm lung tissue?

Output: the nose

Input: Consider Input: Colloids are used industrially as what?
Output: catalysts