Answer to Question 1
b
Answer to Question 2
Prior to 1960, the incidence of sexually transmitted diseases (STDs) in the U.S. had been reduced sharply by barrier-type contraceptives (condoms) and the use of penicillin as a cure. However, in the 1960s and 1970s, the number of cases of STDs increased rapidly with the introduction of the birth control pill, which led to women having more sexual partners and couples being less likely to use barrier contraceptives.
Women are at higher risk of chlamydia. However, in recent years more men have also been tested for chlamydial infection, resulting in an increase in the number of male cases reported.
Untreated gonorrhea may lead to serious outcomes such as tubal infertility, ectopic pregnancy, and chronic pelvic pain..
Untreated syphilis can, over time, cause cardiovascular problems, brain damage, or even death. Penicillin can cure most cases of syphilis as long as the disease has not spread.
AIDS (acquired immunodeficiency syndrome), which is caused by HIV (human immunodeficiency virus), is among the most significant health problems that this nation
and the worldfaces today. Although AIDS almost inevitably ends in death, no one actually dies of AIDS. AIDS reduces the body's ability to fight diseases, making a person vulnerable to many diseases, such as pneumonia, that result in death. Worldwide, the number of people with HIV or AIDS continues to increase, but progress has been
made in some countries in addressing this epidemic. An estimated 34 million people worldwide are living
with HIV/AIDS. HIV is transmitted through unprotected (or inadequately protected) sexual intercourse with an infected partner (either male or female), by sharing a contaminated hypodermic needle with someone who is infected, by exposure to blood or blood products (usually from a transfusion), and by an infected woman who passes the virus on to her child during pregnancy, childbirth, or breast feeding.
Organisms exhibit a diversity of behaviours, which include (clockwise from upper left), foraging and
Close-up of the underside of a gecko's foot as it walks on vertical glass
The Kingsley plantation, on Fort George Island in Jacksonville, Florida. Zephaniah Kingsley, the own
Should we restore YellowstoneNationalPark, as our flagship National Park, to include the natural ...
The tools necessary to adjust the valves on an engine with adjustable rocker arms include basic hand ...
Noncoding regions include all the 5′UTR, 3′UTR and other noncoding RNA regions. UTR = ...