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.

Ex Input:
Question: Which is larger: the human sperm or the human egg? Answer: human egg

Ex Output:
A human sperm is a tiny cell with a tail. A human egg is much larger. Both cells are mature haploid gametes that are capable of fertilization. What process is shown in this photograph?.

Ex Input:
Question: What is the small intestine lined with that helps with nutrient absorption? Answer: villi

Ex Output:
Image copyright Sebastian Kaulitzki, 2013. The small intestine is lined with tiny villi that help absorb nutrients . Used under license from Shutterstock. com.

Ex Input:
Question: In combination or synthesis reactions, two chemical species combine to produce a what? Answer: new compound

Ex Output:
In combination or synthesis reactions, two chemical species combine to produce a new compound. The general expression for a combination reaction is:.