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.
Advantages. H/T tires allow a driver to use the same tires for everyday highway driving as well as off-road driving. The tread of H/T tires provides a relatively quiet and smooth ride on paved surfaces while still having a rough enough tread to provide traction in dirt, mud, snow and other off-road surfaces.isadvantages. H/T tires are a compromise between the performance of highway tires and terrain tires. This means that the H/T tires will not perform as well on pavement as highway tires or as well as terrain tires for off-road purposes.