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OZONE: A Life Cover for Earth

Depletion of Ozone layer results in the sun’s harmful ultraviolet rays and is the leading cause of skin cancer in humans and negatively affects all life on earth

OZONE: A Life Cover for Earth

Sentinel Digital DeskBy : Sentinel Digital Desk

  |  13 Jan 2023 1:25 PM GMT


The direct cause of non-melanoma skin cancer is ultraviolet B radiation, and a permanent ozone layer loss of 10 per cent will result in a 26 per cent rise in the incidence of the disease. This might result in an additional 300,000 cases being reported each year across the world.

The three most powerful bands of ultraviolet radiation are known as UV-A, UV-B, and UV-C. The energy that is emitted by UV-low A has very little impact on living organisms. Because of the energy that it possesses, ultraviolet radiation with the wavelength of UV-B is capable of causing harm to both living things and inanimate items. Oxygen shields people from the damaging effects of UVC radiation.

The ozone layer is able to block out the vast majority of the sun's ultraviolet energy. Because of the depletion of ozone in the stratosphere, the amount of ultraviolet light (UV-B) that reaches the surface of the Earth has increased, which can disrupt biological processes and hasten the deterioration of materials.

A sunburn, which is caused by spending an excessive amount of time in the sun, is an example of the effects of UV-biological B. Sunburns aren't the only adverse health effect that prolonged exposure to UV-B can have. A higher likelihood of developing skin cancer and other health issues is associated with prolonged exposure to ultraviolet (UV) light. Researchers have found that prolonged exposure to UV-B rays has a negative impact on human immunity and hastens the ageing process of the skin.

When exposed to UV-B light, human beings are more likely to experience these impacts. This is a really crucial point. These repercussions have become increasingly widespread throughout as a result of people spending more time outside and exposing more skin to the sun. It's possible that overexposure to the sun will cause more harm as the ozone layer continues to deplete.

Implications for the skin

Exposure to UV-B radiation increases the chance of developing skin cancer for everyone; however, those with fair skin and hair are at a higher risk. Based on the data, UV-immune suppressant B has the same effect on both fair and dark skin. Basal cell carcinomas, squamous cell carcinomas, and malignant melanomas are the most common forms of skin cancer. Basal cell carcinomas and squamous cell carcinomas make up the vast majority of skin malignancies. Basal cell and squamous cell cancers, both of which grow slowly, practically never prove fatal. Because they rarely metastasize, these tumours do not spread much. If caught early enough, most tumours can be surgically removed. The most lethal and rare form of skin cancer is melanoma.

Exposure to UV radiation is thought to be the primary factor in the development of malignant melanoma, a form of skin cancer with a high mortality rate.

The direct cause of non-melanoma skin cancer is ultraviolet B radiation, and a permanent ozone layer loss of 10 per cent will result in a 26 per cent rise in the incidence of the disease. This might result in an additional 300,000 cases being reported each year across the world.

Eye impacts

The lens, the cornea, and the sclera can all be damaged by UVB (conjunctiva). The condition known as "snow blindness" is brought on by an overexposure to UV-B rays, which is not uncommon in snowy, high-altitude environments. A case of snow blindness can be just as damaging to the eyes as a sunburn.

Cataracts are the most common cause of permanent vision loss worldwide. Long-term exposure to UV light is the root cause of these problems.

If there is a 10 per cent decrease in the amount of ozone in the atmosphere, nearly 2 million people will develop cataracts per year.

Immune response

Sunlight inhibits immune systems. The immune system is responsible for defending the body against infectious agents that come from the outside. Recent studies have shown that certain viruses can be "activated" by exposure to UV radiation.


UV rays can cause harm to animals in the same way they do to humans. Any plant's growth can be stunted by an excess of UV-B radiation. Ozone depletion has been linked to a decline in plant diversity, which might have far-reaching consequences for global food supplies. Because of the interconnectedness of all life, a change in the equilibrium of a plant species can have far-reaching consequences. Plants are essential for maintaining soil structure, preventing water waste, generating oxygen, and sequestering atmospheric carbon dioxide. Plants play a crucial role in the web of life that sustains us.

Cancer can be caused by exposure to UV-B rays, both in humans and in pets. Despite the thick coats and pigmentation of animals, it is not possible to artificially shelter them from UV-B on a large scale. This is due to the fact that animals cannot be cloaked. There is no way to protect animals from UV-A rays using artificial means. Eyes and flesh that are exposed are particularly vulnerable to injury.

We are quite fortunate to have a variety of options for sun protection. Some suggestion would be:

Put on a long-sleeved shirts and pants, as well as a brimmed hat, sunglasses with UVB protection, and a hat.

Applying sunscreen with a protection factor of 15 to skin that will be exposed to the sun will prevent sunburn. Apply new sunscreen every hour, especially after engaging in activities such as swimming or heavy sweating.

The ozone layer will forever shield the world from the sun's harmful ultraviolet rays.

The sun's rays are at their most powerful at the equator because of the perpendicular angle at which they strike the earth.

In the winter, when the sun is at its lowest point in the sky, its rays are less powerful. This implies that the sun's rays have to travel deeper through the atmosphere of Earth, which causes them to lose some of their force.

The amount of UV radiation that reaches the surface of the Earth is affected by the sun's inclination during the day. Light has a greater possibility of being dispersed and absorbed by water vapour and other components of the atmosphere when the sun is lower in the sky. Light has a greater range when the sun is lower in the sky. During midday, when the sun is directly overhead, the maximum UV radiation can reach Earth.

Because the air is thinner and more refined at higher elevation, more ultraviolet light is able to reach the summit.

The rain blocks some of the sun's ultraviolet rays.

The negative consequences on the environment is caused by polluted air. A similar effect to that of clouds can be produced by the smog that settles over urban areas.

UV light is reflected nearly entirely by all surfaces. Snow is capable of reflecting 85 per cent of the light, while dry sand and concrete are only capable of reflecting 12 per cent. The amount of light that is reflected by water is around 5 per cent. UV that is reflected can cause just as much damage to people, plants, and animals as direct UV can.

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