HardHard Science
What are the most common elements in the human body?
Riddle
What are the most common elements in the human body?
Choose an answer
A.Iron and Calcium
B.Gold and Silver
C.Silicon and Aluminum
D.Oxygen, Carbon, Hydrogen, Nitrogen
Hint: It's a 4-word phrase with 28 letters, starting with "O".
Answer
Oxygen, Carbon, Hydrogen, Nitrogen
Why this is the answer
O, C, H, and N make up the vast majority of human biological molecules.
This riddle is filed under Science Riddles and rated Hard.