Question

Read the following statements:
i. Ozone is found mostly in the stratosphere
ii. Ozone layer lies 55-75 km above the surface of the earth.
iii. Ozone absorbs ultraviolet radiation from the Sun.
iv. Ozone layer has no significance for life on the earth.
Which set of the statements is correct?

• A. i and iii
• B. ii and iv
• C. ii and iii
• D. i and iv

Answer 1

Answer: (A)

i and iii

Stratosphere

The Ozone layer is mainly found in the lower portion of the stratosphere, from approximately 15 to 35 kilometers (9.3 to 21.7 mi) above Earth. The ozone layer absorbs 97 to 99 percent of the Sun's medium-frequency ultraviolet light.