Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Input: Consider Input: Together, the muscular and skeletal organs are known as the musculoskeletal system.

Output: Together, the muscular and skeletal organs are known as what?


Input: Consider Input: Most of the gray matter is on the surface of the brain, surrounding white matter.

Output: Most of the gray matter is on the surface of the brain, surrounding what other type of matter?


Input: Consider Input: It is important to protect soil because it has nutrients used by plants to grow.
Output: Why is it important to protect soil?