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

Fact 2: Nitrogen, as a gas, is colorless, odorless, and a generally inert element.

Given the two facts above, answer the question "what is found in proteins?" with the following options: 
- Something coming from a gland
 - Something that causes allergies
 - characteristics
 - Transfers energy
 - it keeps an organism warm
 - Chemical energy
 - that material's properties
 - a colorless, odorless gas


 

        a colorless, odorless gas 