Nitrogen,<span>The atmosphere is composed of ~78% nitrogen and ~21% oxygen, with small amounts of other gases. The bulk composition of the earth by weight is mostly, iron, oxygen, silicon and magnesium, in that order, with all the other elements making up only about 5% of the earth's weight.</span>
Phosphorus is an essential element in nucleic acids. Nucleic acids, like DNA and RNA are responsible for coding for proteins that are essential for regulating cellular functions
d because penicillin production doesn’t have to do with biotechnology :)
Answer:
urethral
Explanation:
The urethral opening is called the meatus and lies on the tip of the glans penis. It serves as a passage both for urine and semen.
