Given a scientific passage and an answer, generate a question for the given answer.

Input: Consider Input: Passage: When you use a machine, you apply force to the machine. This force is called the input force. The machine, in turn, applies force to an object. This force is called the output force. The output force may or may not be the same as the input force. The force you apply to the machine is applied over a given distance, called the input distance. The force applied by the machine to the object is also applied over a distance, called the output distance. The output distance may or may not be the same as the input distance. Answer: output force

Output: What do you call the force a machine applies to an object?

Input: Consider Input: Passage: Solutes change the physical properties of solvents. They lower the freezing point and raise the boiling point of solvents. Answer: solutes

Output: What change the physical properties of solvents?

Input: Consider Input: Passage: Figure 1.6 Metabolism Anabolic reactions are building reactions, and they consume energy. Catabolic reactions break materials down and release energy. Metabolism includes both anabolic and catabolic reactions. Answer: catabolic
Output: Metabolism includes both anabolic and which other reaction?