ozone - a highly reactive gas composed of three oxygen atoms., stratosphere - the part of the earth's atmosphere which extends from the top of the troposphere to about 30 miles above the surface and in which temperature increases gradually to about 32°F, troposhphere - The portion of the atmosphere which extends from the earth's surface to the bottom of the stratosphere and in which temperature generally decreases rapidly with altitude., O2 - Oxygen is a chemical element; it has symbol O and atomic number 8., NOx - nitrogen oxides - include two gases-nitric oxide (NO), which is a colourless, odourless gas and nitrogen dioxide (NO2), which is a reddish-brown gas with a pungent odour., CO2 - Carbon dioxide - chemical compound made up of molecules that each have one carbon atom covalently double bonded to two oxygen atoms, photosynthesis - a system of biological processes by which photosynthetic organisms, such as most plants, algae, and cyanobacteria, convert light energy, typically from sunlight, into the chemical energy necessary to fuel their activities., ultraviolet light - a type of electromagnetic radiation that has shorter wavelengths than visible light., chlorofluorocarbons - Industrial gases composed of chlorine, fluorine, and carbon. They have been used as refrigerants, aerosol propellants, cleaning solvents and in the manufacture of plastic foam. They are a type of greenhouse gases., catalyze - To speed up a process, especially a chemical or biochemical reaction., photochemical smog - A mixture of pollutants that are formed when nitrogen oxides and volatile organic compounds (VOCs) react to sunlight, creating a brown haze above cities., fossil fuels - coal, oil, and natural gas are the primary energy sources for the generation of electricity, combustion - a chemical reaction between substances, usually including oxygen and usually accompanied by the generation of heat and light in the form of flame., VOC's - chemicals that evaporate into the atmosphere at room temperature. , greenhouse gases - gases in the atmosphere that raise the surface temperature of planets such as the Earth., hydrofluorocarbons - chemicals made up of hydrogen, fluorine, and carbon. They are commonly used in air conditioning and refrigeration, persistent - Chemicals that are resistant to degradation in the environment., anthropogenic - referring to environmental change caused or influenced by people, either directly or indirectly., aerobic - requiring the presence of air or free oxygen., anaerobic - the absence of oxygen or not requiring oxygen to live., decomposition - It is the process whereby the dead tissues break down and are converted into simpler organic forms., synthetic fertilizer - fertilizers made from human-made compounds like ammonium nitrate, ammonium phosphate, and potassium sulphate., methane - gas that is found in small quantities in the atmosphere. A powerful greenhouse gas., albedo effect - the fraction of light that a surface reflects., deforestation - he purposeful clearing of forested land, cell respiration - a series of chemical reactions that break down glucose to produce ATP,

Climate Change

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