SUBDUCTION ZONES and ISLAND ARCS. Subduction Zones are where cool lithospheric plates sink back into the mantle. It takes about 50 my for the ocean lithosphere that formed in the hot (>1000C) environment at mid-ocean ridges to cool to an equilibrium state and sink to its maximum depth below sea-level.
Ebola hemorrhagic fever is a viral disease caused by Ebola virus that results in nonspecific symptoms (see symptom section of this article) early in the disease and often causes internal and external hemorrhage (bleeding) as the disease progresses.
The worst Ebola virus outbreak ever is ravaging Liberia, Sierra Leone, and Guinea.So far, the disease has killed 670 people and infected more than 1,000, including an American doctor and aid worker. One reason why Ebola is so terrifying is that thereâs no cure, and the fatality rate is roughly 60 to 90 percent.he worst Ebola virus outbreak ever is ravaging Liberia, Sierra Leone, and Guinea. So far, the disease has killed 670 people and infected more than 1,000, including an American doctor and aid worker. One reason why Ebola is so terrifying is that thereâs no cure, and the fatality rate is roughly 60 to 90 percent.