Greenhouse effect - The way in which heat is trapped close to earth’s surface by greenhouse gasses , Pollution - The introduction of contaminants into the natural environment that cause adverse changes, Greenhouse - A structure used to grow plants , Atmosphere - Is a lay of gas, Methane  - Is a chemical compound with the formula CO2, N20 - The formula of nitrous oxide , Temperature - The physical quantity that expresses hotnness, Ozone - In the stratosphere there is a layer of …, Six - How many layers is the atmosphere divided in?, CFC - It means chlorofluorocarbons , Troposphere  - Is the closer layer of the atmosphere to the earth ,

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