Atmospheric Structure and Ozone

Depletion of ozone layer is mainly due to CFC(Chloroflurocarbon).

The ozone layer (O3) in the stratosphere absorbs and blocks most of the Sun's harmful ultraviolet (UV) radiation, particularly UV-B and some UV-C rays. This UV absorption is crucial for protecting living organisms from DNA damage and skin cancer. Photons, cosmic rays, and electrons are not specifically blocked by the ozone layer.

In stratosphere, most of the atmospheric ozone is concentrated.

 Troposphere is the lowest portion of Earth's atmosphere.

Commercial jet aircraft typically fly in the lower stratosphere (approximately 9-12 km altitude) because this layer is stable above weather disturbances in the troposphere. The troposphere has weather and turbulence, while higher layers (mesosphere, thermosphere, exosphere) are too thin for conventional flight.

Infrared radiation is primarily responsible for heat radiation in Earth's atmosphere. It is the wavelength range at which Earth emits thermal radiation back to space. Ultraviolet causes sunburn, X-rays are high-energy ionizing radiation, and radio waves are used for communication - none are primarily responsible for atmospheric heat transfer.

The atmospheric layers in order from Earth's surface upward are: troposphere (0-12 km), stratosphere (12-50 km), mesosphere (50-85 km), thermosphere (85-600 km), and exosphere. The stratosphere immediately above the troposphere contains the ozone layer and is where jets fly.

Most meteors burn up in the mesosphere (50-85 km altitude) due to atmospheric friction. This layer is dense enough to cause significant heating and disintegration of incoming rock fragments, but not as dense as lower layers. The stratosphere is too thin and high for most meteor burning.

The Appleton layer (also called the F-region) is part of the ionosphere, located in the upper atmosphere. It plays a crucial role in radio communication by reflecting radio waves. The ionosphere itself spans across the mesosphere and thermosphere regions.

Ozone layer is present in the lower portion of the stratosphere.

The atmosphere is a layer of gases surrounding Earth, primarily nitrogen (78%) and oxygen (21%). These gases protect life by absorbing ultraviolet radiation and regulating temperature through the greenhouse effect. Solids and liquids are not the primary components.

The troposphere is the lowest layer of Earth's atmosphere, extending from the surface to about 10-15 km altitude. This layer contains approximately 75% of the atmosphere's mass and virtually all weather phenomena including clouds, rain, storms, and temperature variations. The stratosphere above it contains the ozone layer but has minimal weather activity.

The matching is: Ozone Hole-Acceleration of ozone destruction (2), Greenhouse effect-Difference in outgoing and incoming longwave radiation (1), Global warming-Increase in CO2 level (3), Albedo-Ratio of reflected to received radiation (4). This gives the pattern A-2, B-1, C-3, D-4, which matches option A.

Ozone

The ozone layer absorbs most of the Sun's ultraviolet (UV) radiation, particularly UV-B and UV-C rays, which would otherwise cause severe DNA damage in living organisms. Without this protective layer, life on Earth's surface would be exposed to harmful radiation levels.