An epidemic occurs when an infectious disease spreads rapidly to many people. For example, in 2003, the severe acute respiratory syndrome (SARS) epidemic took the lives of nearly 800 people worldwide. disease outbreak happens when a disease occurs in greater numbers than expected in a community or region or during a season. An outbreak may occur in one community or even extend to several countries. It can last from days to years. Sometimes a single case of a contagious disease is considered an outbreak.
Quick Answer. Bitumen is primarily used to pave roads. It is a brown or black mixture of hydrocarbons, which is derived from petroleum. The consistency of bitumen varies from viscous to solid, and in its solid form, it is commonly known as asphalt. Continue Reading.
There is reference to bitumen being used as a coating for Moses' basket and Noah's Ark being 'pitched' inside and out with it.5 Natural deposits of asphalt occur in pits or lakes as residue from crude petroleum that has seeped up through fissures in the earth.he Time of Oil Wells Used Petroleum. The petroleum industry is first encountered in the archaeological record near Hit in what is now Iraq. Hit is on the banks of the Euphrates river and is the site of an oil seep known locally as The Fountains Of Pitch.