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

Ex Input:
What is indicated by the ratio of the output force to the input force in a machine?

Ex Output:
mechanical advantage

Ex Input:
Liquids that mix with each other in all proportions are said to be miscible, maning they have infinite mutual what?

Ex Output:
solubility

Ex Input:
All animals have specialized types of what basic structures, which can then do different jobs?

Ex Output:
cells