Question

The _________(atmosphere/troposphere/stratosphere) is a layer that extends up to about 10-50 km above the earth.

Answer 1

Atmosphere

• The envelope of air around the earth is called the atmosphere.

Troposphere

• It extends up to 0-10 km above the earth's surface.
• It contains most of the air and Oxygen in the atmosphere.

Stratosphere

• It extends up to 10-50 km above the earth's surface.
• It contains the ozone layer that prevents the harmful effects of the sun (U.V. rays) from reaching the earth.

The stratosphere is a layer that extends up to about 10-50 km above the earth.