Nitrogen is found in proteins, nucleic acids, and chlorophyll.
Absorption of nitrogen by plants is part of the nitrogen cycle .
A chemical element with symbol n and atomic number 7 is found in chlorophyll because it is absorbed in the cycle .
What is the chemical element with symbol N and atomic number 7 found in?

1: Chlorophyl
2: Petals
3: Mitochondria
4: A Greek letter
5: Cytoplasm
6: acetic acid
7: Acids
8: fossil fuels