The Earth has a deep layer (at an altitude of 10km) in the stratosphere which contains large amounts of ozone. This layer is called the ozone layer. The ozone layer stops the harmful ultra-violet rays from getting through the Earth. Thanks to the protective shield of the ozone layer there is life on Earth. The ozone layer is a “conserver of life on Earth”
Ozone is a triatomic molecule of oxygen. Its chemical formula is O_3 and it is a natural component of the atmosphere. It is formed through a photochemical process. Ozone looks like a light blue gas. It is highly reactive. Ozone is the second most intense sanitizing chemical in the world and it is utilized to sterilize environments and objects. Ozone is constantly recovered in Earth's stratosphere, changing over ultra-violet radiation into warmth. This system was named the ozone-oxygen cycle. At the end of each cleaning, ozone reverts to clean oxygen. It is a very ecological cycle . Ozone executes microorganisms in the water and it can lessen the concentration of toxins and heavy metals.
Since daylight and warmth are the motors that drive ozone formation, warm
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They are responsible for 80% of total stratospheric ozone depletion. CFC’s are non-toxic and non-flammable. They are used as coolants in refrigeration, as blowing operators in the creation of foam and as solvents in cleaners. Apart from these, the main causes of ozone depletion are the man-made CFC’s. Halons also play a large role in the depletion of the ozone layer. Halons are utilized as a part of particular flame quenchers. In any case, the issue with halons is they can pulverize up to 10 times ozone as CFC’s can. Thanks to the release of such ozone-depleting substances like chlorofluorocarbons (CFC’s), ozone has become depleted over time. Depletion of the ozone layer has caused more UV rays, which means living things on Earth are exposed to higher amounts of UV
Valerie Beketova Dr. Bennett AP Environmental Science 10 December 2015 Chapter 14 Outline Earth is a very dynamic planet Earth is made up of different layers: - Core - interior made up of dense, extremely hot metal, mostly iron. It is the most inside layer of earth. - Mantle - hot, pliable layer that surrounds the most inner layer, the core. It is less dense than core.
Greenhouse gases are those that absorb and emit infrared radiation in the atmosphere. The most abundant greenhouse gases in Earth 's atmosphere are: Carbon dioxide, Methane, Nitrous oxide ,Ozone ,Chlorofluorocarbons (CFCs). Human activities also contribute to climate change by the amounts of greenhouse gases, aerosols (small particles). The largest known contribution comes from the burning of fossil fuels, which releases carbon dioxide gas in the atmosphere.
All organisms need oxygen to survive and when their is not enough oxygen, it leaves plants and animals to die. The area of water where there is a low count of oxygen are often called a dead zones. Also, an increase of the pH level in the water can be created because of algae blooms. The toxic killing algae can make humans sick. For the aquatic animals, these toxins attack mainly the organisms liver and nervous system (Nitrogen and
In the 1980s, during the apogee of the AIDS crisis, many conservatives came forward to blame the homosexual community for the epidemic. For instance, according to Armstrong, Lam, and Chase, Kaposi’s sarcomas, along with other diseases, make up a list of conditions that serves as a guideline for the diagnosis of AIDS. In fact, its relation to AIDS is so remarkable that it became a label; in a society that is divided by pre-conceived ideas of morality, it became a visual representation of HIV as a punishment for homosexuality. However, in Angels in America: a Gay Fantasia on National Themes, Tony Kushner attributes a greater meaning to the lesions caused by Kaposi’s sarcoma – from death sentence to change, and finally, to redemption. These lesions symbolize the lethality that comes with AIDS, and how it has shaped the sense of community amongst homosexuals.
For example, algal blooms can lead to a reduction in the amount of light that can make it through the water (Rice University, 2013). This causes plants to die off, which then results in oxygen depletion. Oxygen depletion means that there is little to no oxygen in the water. An environment becomes anoxic when it has zero amounts of oxygen (Darley et al., 2013). This results
I. Introduction Long ago, since ancient time humans have been using energy and striving for the betterment of themselves, it all began with the use of tools which led to the discovery of fire, from this great breakthrough, humans evolved exponentially. Eons have passed and humans are still using fire to ease their daily lives from cooking, mobility and electricity, but due to the increase in advancement of technologies, it has also increased damages to the planet, thus the governments had started to move towards a producing or replacing the old harmful substance to a less harmful ones, but since one of the most used and one of the highest cause of ozone depletion is chlorofluorocarbon (CFC), it has been banned from production due to the Montreal Protocol 1991, one of the causes as to why it was banned is one of the chemicals it contain is chlorine, once a certain condition is met it depletes the ozone layer, ergo with earth shield compromised more harmful ultraviolet rays will get into the planet, thus only the reservoir of CFC are being used today, now it’s a race against time to replace this CFC with other materials that is less harmful and either as or more efficient than it. There are not a lot of ways to replace chlorofluorocarbon. Some of the most prominent ones are hydrochlorofluorocarbon (HCFC), hydrofluorocarbon (HFC) and magneto caloric effect (MCE).
Some of these fumes can cause brain damage if breathed for too long and the Industrial Revolution was one of the biggest causes of pollution. They were
Over time our planet has become increasingly more industrialized. More factories have been built and increased air pollution has been found all over the world. The surface temperature of the ocean has been steadily increasing as well since the 1950’s (Source B). This has led to people to believe that the surface temperature of the ocean correlates with air pollution.
About 71 percent of our planet Earth is covered by water, and the majority comes from the oceans (about 96.5 percent of all Earth’s water). It remains as the most expansive, diverse, and mysterious places on planet Earth. But it is being threatened by the pollution by people and nature itself. By polluting the habitat of marine organism will indirectly affect the ecosystem of the marine life. Marine life is dying and as the result the oceanic ecosystem is threatened.
Environment: Air Pollution Annotated Bibliography Holden C. Edmonds COMM 2367: Persuasive Communication TR 8:00-9:20 Kristie Sigler September 5, 2016 Environment: Air Pollution Annotated Bibliography Newspaper or Periodical Hawthorne, M. (2011, April 1). High levels of toxic lead found in air outside Chicago school. The Chicago Tribune. Retrieved from http://www.chicagotribune.com/lifestyles/health/ct- met-pilsen-lead-problems-20110331- story.html
In automobile an exhaust gas is emitted during a combustion process. The exhaust gas is actually a combination of many different gases such as N2, CO2, H2O and O2. Though some are harmless, there are few that are harmful and are considered major pollutants. The major pollutants are Hydrocarbons (HC), Nitrogen oxide (NOx), Carbon Monoxide (CO), Sulfur dioxide (SO2), etc. These gases can affect human health in both short and long term.
Disinfection Chemicals Introduction Water disinfection is removal, deactivation or elimination of pathogenic bacteria. Bacteria gets damaged or even deactivated, disabling reproduction. Disinfectants must not just eliminate bacteria. They must have residual effect. The disinfectant must not allow pathogenic bacteria to develop within the domestic plumbing after disinfection, causing water being decontaminated.
On earth, high-energy particles carried by solar winds rarely reach the surface of the earth and its atmosphere. In the article, [2] the author argues that it is impossible for almost all high-energy particles to reach the Earth's surface due to protection by the Earth's magnetic field. Outside of earth, however, space weather created by the sun has a significant impact on the solar system and other planets, comets, asteroid and space itself. Significantly, space weather can have serious negative effects on an astronaut's health and their spatial equipment. Astronauts, their tools and vehicles such as the space shuttle must deal with high-energy particles, ultraviolet radiation, and solar
However, the even more important conditions is the energy from the sun as solar energy is what heats up the air during the
CHAPTER 1 1. INTRODUCTION The air we respire contains mixture of natural and man-made chemical, physical and biological elements that modifies ambient air quality. Among all air pollutants, the most threatening for human health include particulate matter and gaseous pollutants such as carbon monoxide, ozone, nitrogen dioxide and sulfur dioxide (WHO). The movement of people into urban areas and the growth of industry within these areas has carried more people into contact with air pollution than any other time in recent memory.