5
Q:
A) oxygen, nitrogen, carbon, hydrogen, sulfur, and phosphorus | B) carbon, potassium, iron, magnesium, hydrogen, and nitrogen |
C) hydrogen, carbon, calcium, potassium, oxygen, and phosphorus | D) oxygen, calcium, phosphorus, sodium, hydrogen, and carbon |
Answer: A) oxygen, nitrogen, carbon, hydrogen, sulfur, and phosphorus
Explanation:
Explanation:
Living organisms often contain trace amounts of several elements, but the most abundant ones are oxygen, carbon, hydrogen, nitrogen, calcium, sulphur and phosphorus.