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.
Marine Protection, Research, and Sanctuaries Act. A federal statute enacted in 1972 that extends environmental protection to the oceans. Noise Control Act. A federal statute enacted in 1972 that authorizes the EPA to establish noise standards for products sold in the United States.