Where are ozone layer found ?what is ozone hole and how is it caused ?state the
harmful effect of ozone depletion.
Answers
Answer:
In the 1980s, scientists discovered that the ozone layer was thinning in the lower stratosphere, with particularly dramatic ozone loss—known as the "ozone hole"—in the Antarctic spring (September and October).
Answer:
Ozone layer is found in stratosphere.In the middle of the 20th century, a collective interest in the human effect on the environment had begun to emerge. Scientists were keenly observing how interference by society in the natural processes of Earth worked out. In the 1970’s, this research led to some interesting observations about the ozone layer and ozone hole of the Earth.
This layer is present in the atmosphere, and it prevents excessive UV radiation from entering into the Earth. It was noticed that there was a steady decline of the ozone in the stratosphere, which comprised of the ozone layer. They also noticed ozone depletion in larger amounts over the two poles of the earth, which is known as the ozone hole.
A layer of gas called ozone sits up around 25-30 kms above the earth’s surface. Ozone is made up of oxygen and is produced naturally in the atmosphere. As the presence of ozone gets reduced in the atmosphere, it causes the ozone layer to get thinner and thinner. The more ozone layer gets thin, the more the size of the ozone hole gets big.
The ozone layer is important because it prevents too many harmful ultraviolet rays from reaching the earth. Ultraviolet rays have the capability to destroy plants and animals and can cause skin cancer, cataracts to human beings. The existence of life on earth is possible only because of the presence of the ozone layer around the earth.
This ozone depletion was worrisome because it was taking place at an unprecedented rate.