What element is used to link nucleic acids in all organisms?

a. Carbon
b. Nitrogen
c. Silicon
d. Phosphorus


ANS: D
Phosphorus is also used to carry energy within the cell. Phosphorus enters the ocean via rivers and
precipitation in organic form when organisms die. It then converts to phosphate for further use.
Information can be found in the section Elements Cycle between Living Organisms and Their
Surroundings

Environmental & Atmospheric Sciences

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