Most phosphates and nitrates in the Chesapeake Bay come from Agricultural runoff.
Answer:
DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C). The order of these bases is what determines DNA's instructions, or genetic code.
Explanation:
DNA is verry important to life. It is the instructions or the blueprints of how to make (and makes up) the organism. Without it life as we know it is just not possible.
