Advantages: reduce swelling, itchiness, redness, and allergic reactions

Disadvantages: can cause high blood pressure, headaches, muscle weakness, and other bodily irregularities

c. Use in organ transplants, asthma, and immunity 
help suppress the immune system during organ transplants to prevent the organ from being attacked, and can cause the swelling or overreaction of the immune system to be suppressed. 

4) a. What is it? 
Originally developed as an insecticide and was previously used to treat lice. It is now considered as a possible human carcinogen. 

b. What is the relationship between DDT and estrogen? 
DDT is fat-soluble and has estrogenic activity which causes it to bind to estrogen receptors. It has been linked to causing cancer which can tie DDT to causing breast cancer when it binds to the estrogen receptors. 

c. Why have most countries banned its use? Most countries have banned its use due to its effects on human health and the environment (as a pesticide). 

A: A Human chorionic gonadotropin, commonly known as hCG, is a hormone found in women's blood and urine throughout pregnancy. HCG becomes detectable in blood shortly after implantation of the embryo in the uterus.
   B: What reaction occurs to show a positive pregnancy test?

A pregnancy test works by detecting the hCG hormone, which is usually only present in your body if you're pregnant. When hCG is present in a solution, anti-hCG combines with it to produce a visible color reaction.

HCG is produced by trophoblast cells surrounding an embryo that later multiply to form the placenta around the fetus. The amount of the hormone in the bloodstream multiplies every few days as both the embryo and the placenta develop. The placenta takes over progesterone production and ovarian function after it is formed.

By using hormone supplements, injections, and calorie restriction, the HCG diet is intended to promote weight loss. It was first said to reduce feelings of hunger and foster weight loss by redistributing body fat from the thighs, stomach, and hips. Some supporters of this diet believed that it can stabilize the body’s metabolism and fix abnormal eating habits. Although it claims to help a person lose at least a pound a day, there is no scientific evidence to prove the effectiveness of this diet.