Ozone Layer example essay topic

541 words
Type of Resource: Internet Website Bibliographic Detail: 'Acid Rain', Unknown, U. S Environmental Protection Agency, Viewed 08/05/03, Summary of... : - The value of ozone layer to life on the Earth: Stratospheric ozone is a naturally-occurring gas that filters the sun's ultraviolet (UV) radiation. A diminished ozone layer allows more radiation to reach the Earth's surface. For people, overexposure to UV rays can lead to skin cancer, cataracts, and weakened immune systems Increased UV can lead to reduced crop yield and disruptions in the marine food chain. Because this reference is a Government Agency, it has quite a large amount of reference material, and I'm unable to paraphrase too much.

Please see the site for more detail. - How humans have affected the ozone layer: Chemicals that damage the ozone layer include methyl bromide (used as a pesticide), halons (used in fire extinguishers), and methyl chloroform (used as a solvent in industrial processes). These are all man made products. Usefulness of information: There is quite a range of information on this website regarding Ozone. Everything from what ozone is, and what individuals can do to stop the depletion, to animations of the ozone hole. The reliability of the information would indeed be good, seeing it is coming from a Government agency.

There are useful diagrams also located on this website. The information is aimed at the general public, and except for general knowledge, this isn't a good site for students. No equations are included, nor anything very in-depth about the subjects. Type of Resource: Bibliographic Detail: Summary of... : - The value of ozone layer to life on the Earth: - How humans have affected the ozone layer: Usefulness of information: Type of Resource: Internet FAQ Bibliographic Detail: 'Ozone Depletion FAQ Part I: Introduction to the Ozone Layer', 20th of December 1997, Robert Parson, Viewed 08/05/03, web Summary of... : - The value of ozone layer to life on the Earth: - - How humans have affected the ozone layer: O 2 + hv - O + O (wavelength 240 nm) O + O 2 - O 3 Cl + O 3 - ClO + O 2 ClO + O - Cl + O 2 Net effect: O 3 + O - 2 O 2 Usefulness of information: Type of Resource: Internet Website Bibliographic Detail: 'Ozone Overview', Date of Publish Unknown, Center for International Earth Science Information Network, Viewed 08/05/03, Summary of...

: - The value of ozone layer to life on the Earth: - Ozone located in the stratosphere is crucial to life on Earth - Ozone found at the surface of the Earth can be harmful to humans, plants, and animals - High ozone amounts at ground level are known to cause respiratory problems in humans and can lower yields of certain crops - Potential impacts on human health and ecosystems due to increased UV exposure - How humans have affected the ozone layer: - Man made CFC compounds that were once created in the early 1930's for various purposes have acted as a catalyst for the breakdown of the Ozone Layer. Usefulness of information: Not a great source of information.