1) _____ is a molecule formed by 3 atoms of oxygen. a) OXYGEN b) O2 c) OZONE d) OXIDE e) O4 f) O8 2) Ozone shields surface of Earth from ___________ of Sun. a) ULTRAVIA RAYS b) ULTRAVIOLET RADIATION c) ULTRAVIOLET RAYS d) ULTRAVIA ROWS e) ULTRA LIGHT f) SUPERSONIC RAYS 3) UV Rays can cause ____ _____ in human beings. a) tanning b) wrinkles c) eye problems d) premature ageing e) USEFUL 4) The amount of ozone in atmosphere drop sharply in _____ a) 1950s b) 1967s c) 1975s d) 1980s e) 1991s f) 2000s 5) The depletion in ozone has been linked to synthetic chemicals like ________ a) CARBON CHLORIDE b) CARBON FLUORIDE c) CHLOROFLUROCARBONS d) CLOROCARBONS e) CLCs f) FLUROCARBONS 6) In 1987, ___________ succeeded to freeze CFC production at 1986 levels. a) UNITED NATION ENDANGERED PROGRAM b) UNITED NATION EMPOWER PROGRAM c) UNITED NATION SAVE OZONE PROGRAM d) UNITED NATION ENVIRONMENT PROGRAMME e) UNITED NATION ENVIRONMENT PROGRAM f) UNITED KINGDOM OZONE PROGRAM

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