1. Write the chemical symbol each of the following elements.
1. Oxygen
2. Carbon
3. Potassium
4. Iodine
5. Hydrogen
6. Nitrogen
7. Calcium
8. Sodium
9. Phosphorus
10. Magnesium
11. Chlorine
12. Iron
2. In the space below, list the chemicals above from the MOST abundant in the human body to the LEAST abundant.
Additional information
These short answer questions lies from Biology. The first and second question describe about the chemical symbols for various elements and the elements that make up human body in descending order.
Word limit 170