Answer:
genes are special instructions that come from an organism's parents. (sorry about repeating your question the minimum amount of letters and stuff i can type is 20.)
The system is called Taxonomy and was made by Swedish botanist Carlous Linnaeus
<span>Men can produce sperm throughout their adulthood because their reproductive organs and glands are fully developed. During their childhood and adolescence the glands and organs are not functional for reproductive purposes.</span>
The mitochondria is the powerhouse of the cell because it produces ATP, which is energy.
