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.

[Q]: Question: What substance, involved in most biochemical reactions, is essential to life? Answer: water
[A]: Water is involved in most biochemical reactions. Therefore, water is essential to life.

[Q]: Question: What substance can be identified by their atomic number and mass number? Answer: elements
[A]: Elements can be identified by their atomic number and mass number.

[Q]: Question: During the day, what type of energy is transferred from the air over the land to the air over the water? Answer: thermal
[A]:
A: During the day, thermal energy is transferred from the air over the land to the air over the water. During the night, thermal energy is transferred in the opposite direction.