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5 Written questions

5 Multiple choice questions

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

4 True/False questions

  1. water vaporcondition of the Earth's atmosphere at a particular time and place

          

  2. weathercondition of the Earth's atmosphere at a particular time and place

          

  3. carbon dioxidea place pure air is found

          

  4. water vaporwater in the form of gas