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 ebola incubation period lasts between 2 and 21 days, after which some pretty severe symptoms will be experienced. The dreaded Ebola viral disease, previously named Ebola hemorrhagic fever is a serious disease which kills up to 90% of anyone it infects.rognosis of Symptoms. The Ebola viral disease carries great risk of death for anyone who becomes infected. Following a period of incubation of between 2 and 21 days, the virus will then cause the infected individual to display a range and variety of symptoms.