The elemental composition in human body in descending order is 1. Oxygen - Carbon - Nitrogen - Calcium 2. Carbon - Oxygen - Nitrogen - Calcium 3. Calcium - Carbon - Oxygen - Nitrogen 4. Oxygen - Calcium - Carbon

The elemental composition in human body in descending order is 1. Oxygen - Carbon - Nitrogen - Calcium 2. Carbon - Oxygen - Nitrogen - Calcium 3. Calcium - Carbon - Oxygen - Nitrogen 4. Oxygen - Calcium - Carbon - Nitrogen