The ozonosphere is anticipated to return to 1980 levels by about the year __________.
A)2020
B)2040
C)2060
D)2080

Question

Quizplus · Accepted Answer

The Montreal Protocol, an international agreement to protect the ozone layer, was signed in 1987. The protocol has been successful in reducing the production and consumption of ozone-depleting substances, and the ozone layer is expected to return to 1980 levels by about the year 2040.

The Ozonosphere Is Anticipated to Return to 1980 Levels by About