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: What is produced when hydrogen gas and oxygen gas are ignited? Answer: water

Ex Output:
Hydrogen gas and oxygen gas are ignited to produce water.

Ex Input:
Question: The only obvious difference between boys and girls at birth is what type of organs? Answer: reproductive

Ex Output:
The only obvious difference between boys and girls at birth is their reproductive organs. However, even the reproductive organs start out the same in both sexes.

Ex Input:
Question: What happens to energy when an atom gains an electron? Answer: it is released

Ex Output:
A: Energy is released when an atom gains an electron. Halogens release the most energy when they form ions. As a result, they are very reactive elements.