A or C
Just choose any of those!
Answer:
To carry out these functions, DNA sequences must be converted into messages that can be used to produce proteins, which are the complex molecules that do most of the work in our bodies. Each DNA sequence that contains instructions to make a protein is known as a gene.
Explanation:
Answer:
Respiratory
Explanation:
they all come together and help with breathing and oxygen :)
Ok, I'm not fully sure but answer B sound right, so I think it's right