2018
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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How many years did Ozone layer recovering according to the Montreal Protocol?
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4
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6
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5
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8
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Explanation:
Detailed explanation-1: -Earth’s protective ozone layer is slowly but noticeably healing at a pace that would fully mend the hole over Antarctica in about 43 years, a new United Nations report says.
Detailed explanation-2: -The initial agreement was designed to reduce the production and consumption of several types of CFCs and halons to 80 percent of 1986 levels by 1994 and 50 percent of 1986 levels by 1999. The protocol went into effect on January 1, 1989.
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