Correct Answer - Option 3 : Ozone layer
The correct answer is Ozone layer.
- The ozone layer is an area or a continuous region in the stratosphere of the earth that includes high concentrations of ozone(O3) and protects the earth from the sun's harmful ultraviolet radiation.
- It has the ability to absorb the sun's harmful ultraviolet radiation, which can damage life on Earth.
- UV radiation, which is made up of various types of photons, is found in sunlight. UVA and UVB rays are the two forms of UV radiation you're probably most familiar with.
- These rays can have a variety of effects on your skin.
- The comparison between the UV A and UV B is :
|Ozone layer absorption
||Not absorbed by the ozone layer
||absorbed by the ozone layer (almost all )
|Skin cell effected
||affecting cells deeper in the skin
||Affecting cells on the top layer of the skin
|Damage to DNA
||More penetration than UV B
||Lesser penetration than UV A
- The ozone layer thus doesn't allow the penetration of only UV B radiations coming from the sun to the earth.
Hence, the following harmful radiations from the sun are absorbed by the ozone layer is - UV B (Ultraviolet Radiation or Rays B)