Discussion Forum
Que. | The normal amount of overhead ozone in DU |
a. | 150 |
b. | 250 |
c. | 350 |
d. | 450 |
Correct Answer:350
|
Que. | The normal amount of overhead ozone in DU |
a. | 150 |
b. | 250 |
c. | 350 |
d. | 450 |
Correct Answer:350
|