A: Aggregate demand, or AD, is defined as the total amount of goods and services consumers are willing to purchase in a given economy and during a given time period. Sometimes aggregate demand changes in a way that alters its relationship with aggregate supply, or AS; this is called a shift..
The birth control shot, Depo-Provera, is a hormonal injection that prevents unplanned pregnancy for three months at a time. The hormone in this shot is progestin. The birth control shot works similarly to the birth control pill. It prevents ovulation and increases the mucus buildup around the opening of the cervix. According to Planned Parenthood, when you receive it as directed, the shot is 99 percent effective.
Everything you need to know about the Depo-Provera Shot What it is: The contraceptive shot (Depo-Provera) contains a long-acting synthetic hormone and is administered every 12 weeks by injection into your butt or upper-arm muscle. What it does: The shot contains the synthetic hormone progestin, which prevents ovulation and thickens the cervical mucus, which blocks sperm from entering the uterus.