instruction:
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.
question:
Question: When a balloon is rubbed against hair, why do they attract each other? Answer: opposite electron charge
answer:
Electrons are transferred from hair to a balloon rubbed against the hair. Then the oppositely charged hair and balloon attract each other.

question:
Question: What provides the shape of a cell? Answer: cytoskeleton
answer:
The cytoskeleton provides the shape of the cell.

question:
Question: Magnetite crystals of different ages and on different continents pointed to different spots. the simplest explanation is that the continents have done what? Answer: moved
answer:
Magnetite crystals of different ages and on different continents pointed to different spots. The simplest explanation is that the continents have moved.