Multiple Choice
Together,these three natural elements make up 99% of the Earth's biomass.
A) oxygen (O) ,argon (Ar) ,and helium (He)
B) hydrogen (H) ,helium (He) ,and oxygen
C) hydrogen (H) ,oxygen (O) ,and carbon (C)
D) carbon (C) ,nitrogen,and helium (He)
E) hydrogen (H) ,nitrogen (N) ,and helium (He)
Correct Answer:
Verified
Correct Answer:
Verified
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