Fact 1: Nitrogen is found in proteins, nucleic acids, and chlorophyll.

Fact 2: Large amounts of nitrogen are found naturally in the air and soil, and in living organisms.

Given the two facts above, answer the question "What is  found naturally in the air and soil, and in living organisms?" with the following options: 
- solid, liquid, gas
 - Something with a head, thorax, and abdomen
 - metabolic reaction
 - protein,nucleic acid,chlorophy
 - Chemical energy
 - Greenhouse gasses
 - By wind and rain
 - sub-units of species


 

    protein,nucleic acid,chlorophy     