Ozone Layer

Ozone Layer
Ozone, pronounced OH-Zohn, is a form of oxygen that is present in the earth?s atmosphere in small amounts. Ozone in the upper atmosphere is a major factor in making life on earth possible. But ozone in the lower atmosphere contributes to air pollution



4 Things You Ought to Know to Write a Marathi Essay

4 Things You Ought to Know to Write a Marathi Essay
4 Things You Ought to Know to Write a Marathi Essay
Marathi is one of the Indian languages spoken by Marathi people. What is more, it is an official language of an Indian state Maharashtra. Nearly 90 million people around the world speak this language.

If this is all that you know about Marathi, Marathi essay writing will be the most challenging task for you. By the way, we advise you to ask your tutor whether your Marathi essay should be written in this particular language or you just need to tell something about it.

If the first option of writing a Marathi essay is about you, it will be quite difficult to help you. The only solution is to find a person who will teach you the basic principles of writing in Marathi. However, if your Marathi essays can be completed in English, we are ready to help you.



The Poisoning of Our Ozone Layer

The Poisoning of Our Ozone Layer
The poisoning of the Earth?s ozone layer is increasingly attracting worldwide concern for the global environment and the health effects of life on the Planet Earth. There is not just one particular cause for the ozone?s depletion; the accumulation of different pollutants into our ozone layer has all added up and equaled a worldwide problem. There is not just one effect from the poisoning of the ozone, but instead multiple ramifications from diseases to death. The damage to the ozone is increasing with every second; moreover, there are many ways we can help reduce the problem and preserve the ozone layer. Ozone is a pale blue gaseous form of oxygen, in chemical form it is also known as O3. Ozone can be beneficial or harmful depending on its location in the Earth?s atmosphere.



Stratosphere Facts

Stratosphere Facts
Stratosphere is one of the five layers of the earth's atmosphere. Acquaint yourself with some stratosphere facts, through this article.



The Ozone Layer, Greenhouse Effect, and Global Warming

The Ozone Layer, Greenhouse Effect, and Global Warming
Energy is the capacity for doing work, generating heat, and producing light. We use energy from the time we wake up until the time we go to sleep at night. Without energy we would not be able to perform the daily functions of life. Although energy is useful to us, energy has a down side. One of the topics discussed in class was electromagnetic energy. During the lecture on electromagnetic energy, the concept of the ozone layer and global warming was discussed. We briefly talked about how the ozone layer was disappearing because of the increasing amount of greenhouse gases. These topics of electromagnetic energy and the atmosphere struck me. Therefore, I decided to explore the subjects of the ozone layer, greenhouse effect, and the dangers of global warming. Electromagnetic energy travels by wavelengths of radiation and moves at the speed of light



Global Warming

Global Warming
But there is a significant pending problem in the ozone layer. Each year, a large hole appears in it. It is not an actual hole, like a hole in a pocket, but a thinning in the layer that shows up on satellite pictures. The ?hole? is located over Antarctica. It covers an area about the size of the United States. Experiments done in Antarctica show that the hole in the ozone layer appears to let in twice as much ultraviolet radiation as normal, according to measurements researchers made there only about two years ago. Over the whole Earth, the ozone layer has been depleted, or weakened, by an average of about 2 percent, scientists say
Experts are concerned that extra radiation getting through to Earth?s surface could lead to problems in the future. During the next century, extra ultraviolet radiation could cause millions of new cases of skin cancer. Scientists say that synthetic chemicals called chlorofluorocarbons are responsible for eating the hole in the ozone layer. Chlorofluorocarbons, called CFCs for short, are industrial chemicals used in air conditioners, spray cans, foam food containers and other things.



Holes in the Ozone Layer

Holes in the Ozone Layer
Ozone, 03 is a highly important component of the earth?s atmosphere. Close to the ground ozone, is produced by the action of light on exhaust fumes and so concentrates in areas of heavy traffic. In this was it can be a pollutant, it corrodes metal, can inhibit plant growth and cause irritation to the lungs and throat. Up in the stratosphere though, about 15-50km above the earth surface, ozone is beneficial as it intercepts much of the suns UV (ultraviolet) radiation that would otherwise reach the earth. 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.



Depletion of the Ozone Layer

Depletion of the Ozone Layer
The atmospheric ozone layer protects all living things from the harmful effects of the Sun. In recent years however, much damage has been caused to the ozone layer, causing it to decrease in size. The depletion of the ozone layer has and will continue to have many detrimental effects on all living things on this planet. A thinner layer will allow more of the sun?s ultraviolet radiation to reach the Earth?s surface. In particular, it will be the increase of UV-B rays which will have the most negative side effects. It will effect humans, plants, the Earth?s water and every other living creature. Studies have shown that for every five percent reduction in the concentration of ozone, the rate of skin cancer will rise by ten percent, due to increased exposure to the Sun?s ultraviolet rays (Environment Canada). Increased amounts of ultraviolet radiation increase the incidence of eye cataracts, which are patches of light blocking tissue which can lead to blindness (Ehrlich 120). It will also affect plants, which are sensitive to ultraviolet radiation. High levels will cause reduced stem and leaf growth in plants because photosynthetic activity is reduced or damaged. It also causes lower dry weight and affects plants? ability to take in and use water (Ehrlich 120). This in turn reduces agricultural production and the food available to animals. Greater exposure to ultraviolet rays also affects the dna of organisms. The radiation has the ability to reach the dna and alter its structure. This can impair the organisms immune system, cause stunted growth, as well as increase the risk of cancer (Dolan 260). As well, micro-organisms in the soil which produce nutrients, can die from over-exposure to ultraviolet rays, resulting in soil infertility.



Ozone

Ozone
Ozone is an important molecule in maintaining the homeostasis in the
environment. Ozone, the molecule O3, makes a layer in the stratosphere,
situated 10 to 15 kilometers from the earth?s surface. The dioxide
molecule, O2 and Oxygen atom O, collide with each other result in the
formation of Ozone, O3. In this reaction, the molecule O3 contains an excess
of energy. Once the molecule is formed, it is not stable enough to last
long. The energy-rich O3 molecules discards the excess energy by colliding
with another atom or molecule and transferring the energy in the form of
heat. In the results of the decomposition of ozone into O2 and O in the
ozone layer, solar radiation is absorbed. This process of the chemical bond
breaking causing the absorption of a photon by a molecule is called
photodissociation. Radiation with sufficient intensity, is capable of
separating the O3 molecule, resulting in photodissociation. The cyclic
process formation and decomposition of ozone provides a shield against
ultraviolet radiation that enter the earth?s atmosphere. If it were not for
the chemical reaction of radiation and ozone in the stratosphere, these
high-energy photons would penetrate the earth?s surface. The ozone layer
absorbers about 99% of the harmful radiation which makes it possible for
animals and plants to live on the planet.



Layers of the Atmosphere

Layers of the Atmosphere
There are layers of the atmosphere that surround the earth and protect it from the harmful UV rays of sun. If you want to know more about the protective layers of the atmosphere, then read on...