About 25 of the 92 natural elements are known to be essential to life. Which four of these 25 elements make up approximately 96 percent of living matter?

Question

Quizplus · Accepted Answer

Carbon, hydrogen, nitrogen, and oxygen make up approximately 96 percent of living matter. They are essential to the formation of organic molecules such as carbohydrates, lipids, nucleic acids, and proteins. Sodium, phosphorus, and calcium are also essential elements, but they are not as abundant in living matter as the four stated.

About 25 of the 92 Natural Elements Are Known to Be