Several theories have been put forward to explain the first emergence of HIV virus Name one such theory about the origin of HIV. Answer: square Immunity is the ability to resist attack by specific pathogens. State the type of immunity present at birth Answer: square

The first emergence of the HIV virus is a complex and controversial topic, with several theories proposed over the years. One widely accepted theory is the "cut hunter" theory, which suggests that the virus originated from a primate that was hunted and killed for its meat. The hunters may have come into contact with the infected blood or other body fluids, leading to the transmission of the virus to humans.<br /><br />As for the type of immunity present at birth, it is known as "innate immunity." Innate immunity refers to the natural defenses that an individual is born with, which provide a general protection against a wide range of pathogens. These defenses include physical barriers such as the skin and mucous membranes, as well as various immune cells and proteins that can recognize and respond to pathogens.