According to wikipedia, the eggs of the American Robin hatch 14 days after they are laid, while the European Robin's eggs hatch in 13-14 days. Views.
What are chlorofluorocarbons (CFCs)? Chlorofluorocarbons (CFCs) are a group of manufactured chemical compounds that contain chlorine, fluorine, and carbon. This group includes CFC-11, CFC-12, CFC-113, CFC-114, CFC-115, and many forms of Freon. They are colorless, odorless, nontoxic, nonflammable, and stable when emitted. When they are emitted and reach the stratosphere, they break apart and release chlorine atoms, which destroy the earthâs ozone layer. CFCs can last for more than 100 years in the stratosphere. Because they destroy the ozone layer, CFCs have been banned from production in the United States since December 31, 1995.
The chemical symbol for formaldehyde is CH2O. Formaldehyde is released into the air by burning wood, kerosene, or natural gas; from automobiles and diesel exhaust; and from cigarettes and other tobacco products. It is found in the air at home, at work, and outdoors, especially in smog. It is also found in some foods.