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 generally starts with flu-like symptoms. Though it's known for the extreme hemorrhagic symptoms -- the bleeding out of the eyes, etc. -- not everyone will experience these. In fact, only 20 percent of people will have [these extreme symptoms] Bhadelia said.
Incubation Period. The period of incubation for the Ebola viral disease is usually between 5 and 10 days. However, this period can be extended to 2 to 21 days in total.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.