Zachary experienced a surge of energy and feelings of self-confidence and euphoria that lasted less than an hour after taking a drug that blocked the reuptake of dopamine, norepinephrine, and serotonin. the drug he used was most likely.

Cocaine      

Explanation:

A cocaine is a strong stimulant addictive drug which is most often taken as a recreational drug. When injected or inhaled, it creates or levels up the alertness, attention or agitations. A surge of energy is experienced by the inhaler and also feels self confidence and happy. The half life of cocaine is about one hour. Cocaine obstructs the reuptake of norepinephrine, dopamine and serotonin.

Hence the answer is --

Cocaine

the answer is "meiosis ii in the mother".

the procedure of meiosis includes two divisions of the hereditary material. the main division is known as the decrease division – or meiosis i – on the grounds that it lessens the quantity of chromosomes from 46 chromosomes or 2n to 23 chromosomes or (n depicts a solitary chromosome set). in people, the decrease division results in two sperm cells each with 23 chromosomes or an egg cell with 23 chromosomes and one disposed of polar body. the second division – or meiosis ii – is called equational division. the two sperm cells split again creating four sperm cells, each with 23 or n chromosomes. in oogenesis, the egg cell and polar body partition to shape the ovum and two extra polar bodies. along these lines, the posterity are guaranteed to get one portion of the chromosomes from the mother and one half from the dad.