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

Input: Consider Input: Passage: Connective tissue consists of cells that form the body's structure. Examples include bone and cartilage, which protect and support the body. Blood is also a connective tissue. It circulates and connects cells throughout the body. Answer: connective

Output: What tissue consists of cells that form the body's structure?

Input: Consider Input: Passage: Skeletal Muscles. Skeletal muscles enable the body to move. Answer: move

Output: What do skeletal muscles enable the body to do?

Input: Consider Input: Passage: All waves can be defined in terms of their frequency and intensity. Answer: wave
Output: Frequency and intensity are two measurable properties of what?