Pollution - the introduction of harmful materials into the environmentt, Global warming - long-term heating of earth, 3Rs - reduce, reuse and recycle, Environment - sorroundings in which life exists on earth, Greenhouse effect - the way in the heat is concentrated close to the earth, Deforestation - the act of cutting a lot of trees, Damage - harm, Harmful substances - substances that are poisonous, Nonessential products - products that we don´t necessarily need, Environment friendly - products that can be recycled,

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