The Ozone layer is depleting due to man made chemicals we use everyday; this depletion causes an increase in the risk of someone developing skin cancer, and is potentially life-threatening. The ozone layer is a gas that protects the earth from the dangerous UV rays emitted from the sun. (Freedman, page 2934) Due to man made chemicals, the ozone layer is depleting which causes many problems for sustainable life on earth. The rays entering the earth’s stratosphere without the ozone layer will cause damage to many things, such as someone’s eyes or immune system, aquatic life, or plants. Another one of the consequences of ozone layer depletion is that it will cause an increase in the risk of developing skin cancer.
Chlorine is a chemical that disintegrates the ozone. Other everyday items that contribute Cottrell 2 to the devastation of the ozone include household refrigerants and exhaust fumes emitted from automobiles. Without the ozone layer the health of every single living being on planet Earth would be jeopardized. Ozone depletion leads to an increased exposure to ultraviolet light, which can cause many health problems. Exposure to ultraviolet light greatly increases the risks of skin cancer and cataract development.
Over exposure to UV causes damage to DNA in cells and increases chances of mutations. It can reduce the metabolism of plants and algae as well as increasing chances of skin cancers and cataracts in animals and humans. Its also believed UV radiation may do harm to the immune system. The true extent of the damage excess UV radiation does is not really known but there is some evidence that it can cause higher mortality rates in young amphibians and fish. Algae are at the base of the marine food web and so damage to them can cause long lasting harm to marine ecosystems.
Although warmer temperatures and CO2 are good for some crops to grow in some places, you need to follow other conditions such as nutrient levels, soil moisture, and water available. Frequent climate changes make it extremely difficult to grow crops, raise animals, and catching fish. Some crops will produce more with more carbon dioxide in the air. There will also be an Increase of water temperature harming fisheries and wild seafood population. Having too much CO2 in the atmosphere will make oceans more acidic.
Atoms containing bromine, nitrous oxide, and hydrogen oxide radicals are also primarily dangerous. As a result, the Ozone in the stratosphere has been reduced to such an extent that ozone holes are appearing around the globe, in particular one over Antarctica that in 1995 measured 8.2 million square miles. This depletion has allowed more dangerous UV-B radiation to reach the earths surface. So what effects will ozone depletion have on us? Although, at present, the ozone layer blocks out most of the damaging UVB radiation received from the Sun, a small amount slips by, damaging out skin in the form of sunburns and suntans.
With the increase in the UV-B radiation, more damage is done to cellular functions then the natural protection system can deal with (Environment Canada, 1996). Life on earth would more or less be void if not for the formation of the ozone layer during atmospheric formation (Porter, 1996). With out the ozone layer the harmful UV-B radiation would not allow the growth of autotrophic plants, resulting in reduction in oxygen production; ultimately the destruction of most living organisms on the earth surface would result. Increased UV-B radiation has been linked to many incidence of increased health problems among humans. UV-B radiation leads to increase skin cancer, eye damage, and possible inhibition of the immune system (Health Canada).
The ozone absorbs solar UV radiation which makes the stratosphere hot. The ozone also absorbs infrared radiation that comes from the earth’s surface, trapping the heat in the troposphere. Ozone depletion has severe repercussions on humans, animals, and plants. As I stated earlier, exposure to UV rays can cause a number of problems to all life. One of the big ones is skin cancer.
During the annual ozone hole, the amount of UV radiation that reaches the Earth can double. Ozone depletion serves as a major health risk for human beings. The three primary health effects of ultraviolet radiation on human health are damage to the skin,eyes, and immune system. SKIN DAMAGE UV radiation causes significant damage to human skin, in the form of sunburns, aging, skin cancer, and nonmelanoma tumors. Human skin damage is primarily a result of tanning.
Although the sun's emissions of UV rays remain constant, decreases in stratospheric ozone levels cause a reduction in the Earth's protection from the sun's harmful rays. Research has recently shown that over exposure to UV-B radiation can impair the body's ability to fight off disease, in addition to causing skin cancer and a range of eye disorders. Ultraviolet radiation also deleteriously affects plant growth by reducing leaf size and the... ... middle of paper ... ...mental effects on marine life and the aquatic food chain. Further damage to the earth's aquatic ecosystems must be prevented in order to prevent not only the deterioration of oceanic life, but also the deterioration of the planet and its diverse life forms. By ceasing CFC usage and implementing substitutes, as well as through decreasing fossil fuel emissions and the release of other chemicals into the atmosphere, we can attempt to conserve what remains of the ozone layer and thus impede the increasing penetration of UV rays into the Earth's atmosphere and oceans.
Malignant melanoma, basal and squamous cell carcinoma are the most common cancers caused by exposure to UV rays. Eye Damage: UV rays are harmful for our eyes too. Direct exposure to UV rays can lead to Cataract problems, and also Photokeratitis or snow blindness. Damage to Immune system: our immune system is also highly vulnerable to UV rays. Increased exposure to UV rays can lead to weakening of the response of immune system and even impairment of the immune system in extreme cases.