DNA or deoxyribonucleic acid is a long molecule that contains our unique genetic code. Like a recipe book it holds the instructions for making all the proteins in our bodies. Your genome? is made of a chemical called deoxyribonucleic acid, or DNA for short.
Answer:
its a metal chain not a food chain, (steel to be more specific)
Explanation:
I believe its A because all the other one dont make scene really.
Pretty sure it is A. Like a sample population
