Hiv a Communicable Disease HIV: A Communicable Disease HIV, Human Immunodeficiency Virus, is a communicable disease... that was once considered a death sentence years ago. It is a disease that is contracted by the exchange of bodily fluids such as blood, semen, and vaginal secretions.
As a result of pressure, friction, and plate material melting in the mantle, earthquakes and volcanoes are common near convergent boundaries. When two plates move towards one another, they form either a subduction zone or a continental collision.This depends on the nature of the plates involved. subduction zone is formed at a convergent plate boundary when one or both of the tectonic plates is composed of oceanic crust. The denser plate, made of oceanic crust, is subducted underneath the less dense plate, which can be either continental or oceanic crust.
Examples of Convergent Boundaries. The west coast of South America is a convergent boundary between the Nazca plate and the South American plate. The collision of this oceanic and continental plate was how the Andes mountains were formed.Convergent boundaries can also form islands.The northern part of the Pacific Plate is subducting under the North American Plate, and the result is the formation of the Aleutian Islands.he collision of this oceanic and continental plate was how the Andes mountains were formed. Convergent boundaries can also form islands. The northern part of the Pacific Plate is subducting under the North American Plate, and the result is the formation of the Aleutian Islands.