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: What part of the sweet potato store sugar from photosynthesis as starch? Answer: roots

SOLUTION: Secondary growth of sweet potato roots provides more space to store food. Roots store sugar from photosynthesis as starch. What other starchy roots do people eat?.

PROBLEM: Question: How many dimensions can humans see in? Answer: three

SOLUTION: Humans can see in three dimensions and color.

PROBLEM: Question: What changes the chemical composition of a substance and can only occur through a chemical reaction? Answer: chemical changes

SOLUTION:
Pure substances, such as compounds, can be separated through chemical changes. Chemical changes change the chemical composition of a substance and can only occur through a chemical reaction.