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.
Ebola virus is one of a group of viruses that cause a hemorrhagic fever syndrome. Symptoms of Ebola virus infection are similar to those produced by other hemorrhagic fever viruses and include fever, fatigue, malaise, reddened eyes, weakness, joint pain, muscle pain, headache, nausea, vomiting, and diarrhea. Patients experience a loss of appetite and often stomach pains. Some patients experience sore throat, rash, cough, hiccups, chest pain, breathing problems, and difficulty swallowing. Later, as the disease progresses and worsens in severity, symptoms can include bleeding at various sites within or outside of the body. Medically Reviewed by a Doctor on 8/11/2014.