Question

QI. Multiple choice questions:
1. (Light year / dobson unit) is used to measure the thickness of the ozone layer.
2. (Methane / chlorofluorocarbons) is responsible for the depletion of the ozone layer
3. In September 1987, (34 / 44) industrialized Nations signed the Montreal protocol.
4.1 dobson unit is equal to (0.10 /0.01) mm.
5. The ozone depletion is almost (nil / maximum) above the equator.
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Answer 1

1. dobson unit
2. chloroflourocarbons
3. 44
4. 0.01
5. nil

Answer 2

Answer:

chlorofocarbon is answer