March 31, 2015. A webcam is a small camera attached to a computer. They serve a variety of purposes, from taking still images to sending a live video over conference calls. Many laptops have a webcam built in to the computer screen, but external webcams are also sold. If you purchase an external webcam for use, you may also need to get a microphone if you plan on using the camera for either captured or live video.
Environmental Protection Agency: The US government agency founded to protect human health and to safeguard the natural environment--air, water, and land--upon which life depends.. The Environmental Protection Agency is known as the EPA.
The federal Environmental Protection Agency (EPA) was created on December 2, 1970, by executive order of President Richard Nixon to permit coordinated and effective government action on behalf of the environment..hen the EPA was created in 1970, it was headed by William Ruckelshaus (1932-), a loyal member of the Republican party who earned a reputation as a skilled administrator, who was able to work effectively with environmentalists as well as businesspeople. The EPA faced little criticism until the early 1980s.