Question

Cells are primarily composed of these elements: ​

Answer 1

carbon, hydrogen, oxygen and nitrogen.

Explanation:

The cells of living things are made mainly of four elements: carbon, hydrogen, oxygen and nitrogen. They make up 96% of the atoms that are in living things, so they would be considered major chemicals. However, depending on how you define major, other elements that only make up a few percent of cells can top the list.