Cuts and scrapes may become infected when bacteria enter the wound, resulting in a skin infection. This causes changes in the texture of the skin and turns the surrounding skin red or white. Fungal infections, such as ringworm and tinea versicolor, can also trigger discolored skin patches on various parts of the body.
A plough (UK) or plow (US; both /ËplaÊ/) is a tool (or machine) used in farming for initial cultivation of soil in preparation for sowing seed or planting to loosen or turn the soil.
A lever is a simple machine that makes work easier for use; it involves moving a load around a pivot using a force. Many of our basic tools use levers, including scissors (2 class 1 levers), pliers (2 class 1 levers), hammer claws (a single class 2 lever), nut crackers (2 class 2 levers), and tongs (2 class 3 levers). It all depends on where the fulcrum point is as compared to the load point.