Discussion Forum
Que. | By the mid of 1980s depletion of total overhead ozone in Antarctic region is |
a. | 20% |
b. | 30% |
c. | 40% |
d. | 50% |
Correct Answer:50%
|
Que. | By the mid of 1980s depletion of total overhead ozone in Antarctic region is |
a. | 20% |
b. | 30% |
c. | 40% |
d. | 50% |
Correct Answer:50%
|