Ozone Depletion Articles

• Extinction
  Dinosaurs
  Endangered Animals
  Endangered Plants
  Fossils
  Early Climate
   
  

  Extinction event

  An extinction event (also extinction-level event, ELE) occurs when a large number of species die out in a relatively short period of time. Since life began on Earth, a number of major mass ... > more
• Acid Rain
  Air Pollution
  Pollution
  Air Quality
  Soil Types
  Forest
   
  

  Acid rain

  Acid rain is defined as any type of precipitation with a pH that is unusually low. Dissolved carbon dioxide dissociates to form weak carbonic acid giving a pH of approximately 5.6 at typical ... > more
• Pollution
  Environmental Issues
  Air Quality
  Air Pollution
  Environmental Science
  Healthy Aging
   
  

  Pollution

  Environmental pollution is the release of environmental contaminants, generally resulting from human activity. Carbon monoxide, sulfur dioxide and nitrogen oxides produced by industry and motor ... > more
• Healthy Aging
  Attention Deficit Disorder
  Food Additives
  Sports Science
  Sports Medicine
  Chemistry
   
  

  Chlorine

  Chlorine is the chemical element with atomic number 17 and symbol Cl. It is a halogen, found in the periodic table in group 17. As the chloride ion, which is part of common salt and other compounds, ... > more
• Global Warming
  Climate
  Environmental Issues
  Environmental Policy
  Environmental Science
  Weather
   
  

  Attribution of recent climate change

  Attribution of recent climate change is the effort to scientifically demonstrate which mechanisms are responsible for observed changes in the Earth's climate. The endeavor centers on the observed ... > more
• Computer Modeling
  Climate
  Global Warming
  Weather
  Environmental Issues
  Nature
   
  

  Global climate model

  General Circulation Models (GCMs) are a class of computer-driven models for weather forecasting, understanding climate and projecting climate change, where they are commonly called Global Climate ... > more
• Chemistry
  Inorganic Chemistry
  Sports Science
  Organic Chemistry
  Weapons Technology
  Air Quality
   
  

  Fluorine

  Fluorine is the chemical element in the periodic table that has the symbol F and atomic number 9. Atomic fluorine is univalent and is the most chemically reactive and electronegative of all the ... > more
• Volcanoes
  Natural Disasters
  Sports Science
  Geology
  Global Warming
  Early Climate
   
  

  Volcano

  A volcano is an opening (or rupture) in the Earth's surface or crust, which allows hot, molten rock, ash, and gases to escape from deep below the surface. Volcanic activity involving the extrusion of ... > more
• Earth Science
  Geology
  Near-Earth Object Impacts
  Earthquakes
  Environmental Issues
  Geomagnetic Storms
   
  

  Earth

  Earth often referred to as the Earth, Terra, the World or Planet Earth, is the third planet in the solar system in terms of distance from the Sun, and the fifth largest. It is also the largest of its ... > more
• Marine Biology
  Oceanography
  Fish
  Geography
  Extinction
  Fisheries
   
  

  Dead zone (ecology)

  Dead zones are hypoxic (low-oxygen) areas in the world's oceans, the observed incidences of which have been increasing since oceanographers began noting them in the 1970s. The term could as well ... > more

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