Question

question 6 of 13
humans are mostly made of what elements?
helium
hydrogen
neon
carbon
oxygen

Explanation:

Humans are composed mainly of oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. Among the given options, hydrogen, carbon, and oxygen are major elements in the human body. Helium and neon are not major components of the human body.

Answer:

B. Hydrogen, D. Carbon, E. Oxygen