Multiple choice

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

  1. Between the years 2050 and 2065

  2. By the year 2030

  3. Between the years 2080 and 2090

  4. By the year 3000
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A Correct answer
Explanation

Scientific assessments indicate that with the continued implementation of the Montreal Protocol, the ozone layer is expected to recover to 1980 levels between 2050 and 2065.

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