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 state of hydrogen can be predicted based on the atoms to which it is bonded? Answer: oxidation
The oxidation state of hydrogen can also be predicted based on the atoms to which it is bonded. As with other pure elements, hydrogen has an oxidation state of zero in H 2 .

Question: What is the largest mineral group, comprising over 90% of earth's crust? Answer: silicates
Silicates are the largest mineral group. About 1,000 silicate minerals are known. Silicate minerals are also extremely common. They make up over 90% of Earth's crust!.

Question: What is the common name for the midpoint between high and low tide? Answer: sea level
Sea level is the midpoint between high and low tide. It can vary around Earth.