EDUCATION (CBSE/UGC NET)

Detailed explanation-1: -The ozone layer lies approximately 15-40 kilometers (10-25 miles) above the Earth’s surface, in the stratosphere.

Detailed explanation-2: -90% of the planet’s ozone is in the “ozone layer” which exists in the lower level (20-25 kilometres above sea level) of the stratosphere. The stratosphere is the region of the atmosphere which exists between 10 and 50 kilometres above the surface of the earth.

Detailed explanation-3: -About 10% of atmospheric ozone is in the troposphere, the region closest to Earth (from the surface to about 10–16 kilometers (6–10 miles)). The remaining ozone (about 90%) resides in the stratosphere between the top of the troposphere and about 50 kilometers (31 miles) altitude.

Detailed explanation-4: -The ozone layer is mainly found in the lower portion of the stratosphere, i.e. approximately 20-30 km above the earth, though its thickness varies seasonally and geographically. Ozone layer acts as a shield by absorbing UV-rays from the sun. Q.

Detailed explanation-5: -The natural level of ozone in the stratosphere is a result of a balance between sunlight that creates ozone and chemical reactions that destroy it. Ozone is created when the kind of oxygen we breathe-O2-is split apart by sunlight into single oxygen atoms.