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5 Written questions

5 Multiple choice questions

  1. a place pure air is found
  2. makes up 21% of the gases in dry air
  3. makes up 78% of the gases in dry air
  4. tiny solid or liquid parts of smoke, dust, salt and chemicals
  5. makes conditions on Earth suitable for living things

4 True/False questions

  1. fossil fuelstiny solid or liquid parts of smoke, dust, salt and chemicals

          

  2. oxygennecessary for a fire to burn

          

  3. carbon dioxideessential to life, plants need it to produce food & animals give it off as a waste product

          

  4. atmospherecondition of the Earth's atmosphere at a particular time and place