Zoology notes | biology depletion of ozone layer – its causes and effect for: science class 11 depletion of ozone layer the ozone is a gas (o 3) occurs naturally in earths atmosphere between 10-50 km the ozone is considered as both destroyer as well as protector for us the ozone as a destroyer. The ozone layer is a belt of the naturally occurring gas ozone it sits 93 to 186 miles (15 to 30 kilometers) above earth, and serves as a shield from the harmful ultraviolet b (uvb) radiation.
The reason behind ozone layer depletion is mainly due to the extensive use of ozone-depleting substances (ods some ozone-depleting substances are: chlorofluorocarbons (cfc) : the use of cfc’s is one of the main reasons for the depletion of the layer. What causes a hole in the ozone layer and leads to its depletion contrary to the popular belief, the ozone layer hole is not a hole, but a region wherein the ozone layer is severely depleted in this helpsavenature article, we will see how this depletion has occurred over the course of time.
What is the ozone hole a decrease in 1% of ozone layer can cause 5% increase in cases of skin cancer depletion of ozone layer and increase in uv rays can also cause dna damage which can also be catastrophic aquatic plants and animals are not even safe uv rays can penetrate through water and can kill small plants and animals.
Ozone layer depletion increases the amount of uvb that reaches the earth’s surface laboratory and epidemiological studies demonstrate that uvb causes non-melanoma skin cancer and plays a major role in malignant melanoma development in addition, uvb has been linked to the development of cataracts. 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 big gets the size of ozone hole. Causes of ozone layer depletion credible scientific studies have substantiated that the cause of ozone layer depletion is human activity, specifically, human-made chemicals that contain chlorine or bromine these chemicals are widely known as ods, an acronym for ozone-depleting substances.
Along the years, many environmentalists and scientists have been wondering about what causes ozone depletion they have been debating this problem and its causes for a while now, trying to diminish the effects of climate changemaybe we do not realize this, but ozone layer depletion is a severe problem that affects our whole planet. Effects of ozone layer depletion let us see a few possible effects of the ozone layer depletion on the earth’s environment and also on the plants and animals the depletion of ozone layer allows entering of uv rays from sun into the earth’s atmosphere which is associated with a number of health related and environmental issues. Ozone layer depletion first captured the attention of the whole world in the latter half of 1970, and since then, a lot of research has been done to find its possible effects and causes various studies have been undertaken to find out possible solutions. The ozone layer is a belt of the naturally occurring gas ozone it sits 93 to 186 miles (15 to 30 kilometers) above earth, and serves as a shield from the harmful ultraviolet b (uvb) radiation emitted by the sun.
The main cause of ozone depletion and the ozone hole is manufactured chemicals, especially manufactured halocarbon refrigerants, solvents, propellants and foam-blowing agents (chlorofluorocarbons (cfcs), hcfcs, halons), referred to as ozone-depleting substances (ods. Solutions to ozone layer depletion depletion to ozone layer depletion does not affect a region or a country in fact whole world is vulnerable to its after affects the increase in the levels of uv rays lead to high rate of skin cancer and eye related problems lets have a look at some of the solutions to ozone layer depletion.