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Environmental Issues
Ozone Depletion in the Stratosphere
4 questions from 4 papers, each with its answer.
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All Questions
2023 1 question
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The thickness of ozone in a column of air in the atmosphere is measured in terms of:
Ozone column thickness is measured in Dobson units.
The thickness of the ozone in a column of air from the ground to the top of the atmosphere is measured in terms of Dobson units (DU).
2021 1 question
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Dobson units are used to measure thickness of:
2020 1 question
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Montreal protocol was signed in 1987 for control of:The Montreal Protocol was signed at Montreal (Canada) in 1987 (effective from 1989) to control the emission of ozone depleting substances.
2019 1 question
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Which of the following protocols did aim for reducing emission of chloroflurocarbons into the atmosphere?