Answer:
D
Explanation:
Cells are living things therefore, nonlivng objects do not have cells
I think you just answered your question. They encourage adolescents to eat calcium-rich foods because it aids in bone formation, like you said.
Chargaffs rules states that dna from any cell of all organisms should <span>have a 1:1 ratio (base Pair </span>Rule<span>) of pyrimidine and purine bases and, more specifically, that the amount of guanine is equal to cytosine and the amount of adenine is equal to thymine.</span>
