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

Fact 2: Lawns eat nitrogen.

Given the two facts above, answer the question "what do lawns eat?" with the following options: 
- hydrate their cells
 - density
 - weathering
 - organic matter
 - By wind and rain
 - Something made from fermented ricce
 - proteins and nucleic acids
 - plastic


 

       proteins and nucleic acids  