chemistry

1. Numeric functions always return numbers (or the system-missing value whenever the result is indeterminate)
5. controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes structures that contain the hereditary information.
7. formula, a group of letters and subscript numbers that represent that make up of a chemical compound
8. sink, an activity or mechanism that absorbs and stores carbon dioxide
9. an atom or group of atoms that has an electrical charge, either positive or negative
10. new substance produced in a chemical reaction
11. smallest unit into which matter can be divided without the release of electrically charged particles

2. Acids play important roles in the human body. The hydrochloric acid present in the stomach aids digestion by breaking down large and complex food molecules.
3. Electrons play an essential role in numerous physical phenomena, such as electricity,
4. is found naturally in many foods and as a supplement. Its main role in the body is to help maintain normal levels of fluid inside our cells
6. water in all its different forms on earth