MCQOPTIONS
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| 1. |
The majority of the ozone (about 97% ) found in the atmosphere is concentrated in the stratosphere at an altitude of |
| A. | 15 to 55 kilometers above the Earth's surface |
| B. | 15 to 30 kilometers above the Earth's surface |
| C. | 20 to 30 kilometers above the Earth's surface |
| D. | 20 to 40 kilometers above the Earth's surface |
| Answer» B. 15 to 30 kilometers above the Earth's surface | |