Answer:
The genome of an organism is inscribed in DNA, or in some viruses RNA. The portion of the genome that codes for a protein or an RNA is referred to as a gene. Those genes that code for proteins are composed of tri-nucleotide units called codons, each coding for a single amino acid.
Explanation:
Oxygen enters the blood in the A. Bronchi.
Because some of them are immune and only works for one thing in the system
To be more correct, the left side is alkali metals