Population problem is a problem faced by all nations. Considered urgent problem is the development of the population. Many of the theories put forward by the experts concerned with population growth. These theories in fact looking for the solution of population growth tends to increase more rapidly than the necessities of life.

Emergency contraception is a form of birth control. You can use this method if you have had unprotected sex. For example, if your regular birth control fails (the condom breaks during sex), if you forget to take your birth control pills or if you have sex without using any birth control.

There are 2 types of emergency contraception. With the first, you take special doses of birth control pills. With the other, an intrauterine device (also called an IUD) is placed in your uterus (or womb).

Depo Provera (also known as DMPA or Depot Medroxyprogesterone Acetate) is a hormone injection that lasts for 3 months to prevent pregnancy. The injection contains synthetic progesterone and no estrogen. It is usually given in the the arm, hip, upper thigh, or abdomen, delivering a high level of progesterone into the body. Depo Provera stops the ovaries from releasing eggs. Depo Provera causes the cervical mucus to thicken and changes the uterine lining, making it harder for sperm to enter or survive in the uterus. These changes prevent fertilization. Depo Provera is a very private form of birth control because it cannot be seen on the body and requires no home supplies. It does, however, require a clinic appointment every 3 months.See Here

Depo Provera is 97-99.7% effective as birth control. It does not protect against reproductive tract infections, including HIV/AIDS. There are some serious health risks with Depo Provera, so be sure to get all the facts in advance.