Linguist Pro 3.5

verify: A greenhouse is a glass building used to grow plants. A greenhouse has transparent glass that allows the sunlight to pass through, but does not allow the heat inside to escape. The same affect occurs on the earth. The suns radiation passes through the atmosphere to heat the earth's surface. When heated, the earth's surface produces infrared radiation, which has a longer wavelength than that of sunlight. This infrared radiation rises into the atmosphere where gases, such as carbon dioxide, prevents the infrared radiation from escaping into space. The concentrations of these gases which are called greenhouse gases, control how much infrared radiation escapes. The retained radiation heats the earth's atmosphere, thus keeping the planet warm.