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.
The concrete wheelbarrow is used to carry concrete from the delivery truck to the installation site (if pulling the truck up to the site is not possible). Make sure that you use a heavy-duty, contractor-type wheelbarrow, as the smaller, garden variety with rubber wheels are not designed for the weight of concrete. In addition, filling these small wheelbarrows with concrete will make them essentially impossible to maneuver and cause spilling.