2) When was the first ozone hole discovered?

3) The depletion in the Ozone layer is caused by:

4) Which of the following represents ozone gas molecule:

5) Number of countries that signed Montreal Protocol is _____

6) Which of the following devices can be used to measure ozone in the stratosphere from the ground?

7) Where is the 'hole' in the ozone layer located?

8) The warming of the atmosphere by the trapping of heat being radiated to space is called

9) Ozone is formed in the

10) Between what altitudes, is the ozone layer found in the highest concentrations?

11) What is the name of the international agreement committing parties to phasing out ozone-depleting substances and phasing down hydrofluorocarbons (HFCs)?

12) What is the (approximate) global warming potential (GWP) of hydrofluorocarbon HFC-134a?

13) When do scientists predict the ozone layer will heal and return to pre-1980 levels?

14) Who discovered the Ozone Layer?

15) What range of wavelengths of the sun’s radiation is absorbed by ozone layer?