Multiple Choice
Together,three natural elements make up 99% of Earth's biomass.Which of the following lists those three elements?
A) Oxygen (O) ,hydrogen (H) ,nitrogen (N) .
B) Hydrogen (H) ,nitrogen (N) ,carbon (C) .
C) Nitrogen (N) ,carbon (C) ,oxygen (O) .
D) Carbon (C) ,oxygen (O) ,hydrogen (H) .
Correct Answer:

Verified
Correct Answer:
Verified
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