1) acid rain a) It is a poisonous gas that go out from factories. b) It is a kind of rain that contains large amounts of harmful chemicals. c) It is the animals and plants which may soon not exist . 2) carbon monoxide a) It is a poisonous gas that is formed by the incomplete combustion of fuels.  b) It is unwanted matter or material. c) It is a strong, unpleasant, dangerous air. 3) deforestation a) It is the general weather conditions that is found in a particular place b) It is the process by which land changes into desert. c) It is the cutting down of trees in a large area. 4) ozone layer a) It is the gradual increase in world temperatures.  b) It is the layer that prevents harmful ultraviolet light from the sun from reaching the Earth. c) It is the damage caused by water, air or soil by harmful substances. 5) global warming a) It is the process by which land changes into desert. b) It is a place that contains large amounts of harmful chemicals . c) It is the gradual increase in world temperatures caused by polluted gases. 6) pollution a) It is the damage caused to water, air or soil by harmful substances or waste. b) It is an unpleasant smoke that goes out of factories. c) It is the general weather conditions. 7) desertification a) It is the general weather conditions. b) It is the process by which land changes into desert. c) It is an organic material that decays naturally. 8) greenhouse effect a) It is the warming of the planet b) process through which heat is trapped by substances known as 'greenhouse gases.' c) It is the process by which the ocean level is rising 9) Fossil fuels burning a) refers to the burning of oil, natural gas, and coal to generate energy b) refers to the burning of carbon dioxide c) refers to the use of planes 10) Chemicals a) are elements, an alloy, or a compound made up of two or more elements combined in a fixed ratio. b) often refers to an undesirable additive or contaminant c) is a core concept in the field of chemistry

Environment - definitions

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