All living things contain what components?
A.
oxygen, hydrogen, and carbon
B.
helium, nitrogen, and iron
C.
proteins, fats, and carbohydrates
D.
oxygen, carbon dioxide, and carbon monoxide
E.
water, hydrogen, and sodium
Living organisms also contain a lot of hydrogen, oxygen, nitrogen, sulfur, and phosphorous. Those atoms combine together to form complex molecules of various types: proteins, carbohydrates, lipids, and nucleic acids.
