Answer:
So this is just a guess but i think its D but like I said its a guess.
A codon is a sequence of three DNA or RNA nucleotides that corresponds with a specific amino acid or stop signal during protein synthesis. DNA and RNA molecules are written in a language of four nucleotides; meanwhile, the language of proteins includes 20 amino acids. Codons provide the key that allows these two languages to be translated into each other.
Only animals in the same <u>species</u> can always breed and have fertile offspring.
Although animals in the same genus<em> can </em>breed, their offspring are usually infertile.
RNA viruses can copy themselves which is harder for scientists to give an accurate conclusion to solve them.
Erosion control have these three terms (<span>trees, contouring, terraces</span><span>) in common.</span>
