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: What is the distance north or south of the equator called? Answer: latitude
Latitude is the distance north or south of the Equator. It is expressed as a number between 0 and 90 north or south.

Question: What is the term for the gases that surround a planet? Answer: the atmosphere
An atmosphere is the gases that surround a planet. The early Earth had no atmosphere. Conditions were so hot that gases were not stable.

Question: What is the simplest unit of structure and function of all living organisms called? Answer: cell
A cell is the simplest unit of structure and function of all living organisms. From the smallest bacteria to the largest whale, all life is made of at least one cell.