1. Which elements are most abundant in living organisms? hydrogen, carbon, calcium, potassium, oxygen, and phosphorus oxygen, calcium, phosphorus, sodium, hydrogen, and carbon carbon, potassium, iron, magnesium, hydrogen, and nitrogen oxygen, nitrogen, carbon, hydrogen, sulfur, and phosphorus
The set of element that are the most abundant in living organisms include oxygen, nitrogen, carbon, hydrogen, Sulfur and phosphorus.
CHON is the mnemonic acronym for the four(4) most common elements in living organisms. C - carbon H - hyrogen O - oxygen N - nitrogen Among the choices, only the last option contains CHON. oxygen, nitrogen, carbon, hydrogen, sulfur, and phosphorus