The four most common elements found in living things are
A. nitrogen, oxygen, phosphorus, and carbon.
B. carbon, oxygen, nitrogen, and hydrogen.
C. carbon, oxygen, potassium, and calcium.
D. oxygen, calcium, hydrogen, and carbon.
Answer:B
The four most common elements found in living things are
A. nitrogen, oxygen, phosphorus, and carbon. B. carbon, oxygen, nitrogen, and hydrogen. C. carbon, oxygen, potassium, and calcium. D. oxygen, calcium, hydrogen, and carbon.