TASK DEFINITION: Given a scientific question and its correct answer, generate supporting facts for the answer. This supporting fact can be an explanation for the answer to the given question.
PROBLEM: Question: The central nervous system is composed of the brain and what else? Answer: the spinal cord

SOLUTION: User:Grm_wnr/Wikimedia Commons, modified by CK-12 Foundation. The central nervous system is composed of the brain and the spinal cord . Public Domain.

PROBLEM: Question: What is the invisible force that pulls things to earth? Answer: gravity

SOLUTION: Gravity cannot be seen. It does not require things to touch. Gravity is an invisible force. Many things are pulled to the Earth by gravity. Can you think of some things that fall toward the Earth?.

PROBLEM: Question: How many centimeters are in a meter? Answer: 100

SOLUTION:
500. mm is equivalent to 0.5 m.