Near-Earth Object Impact Articles

• Soil Types
  Organic
  Fungus
  Landslides
  Agriculture and Food
  Acid Rain
   
  

  Soil science

  Soil science deals with soil as a natural resource on the surface of the earth including soil formation, classification and mapping; physical, chemical, biological, and fertility properties of soils ... > more
• Ecology
  Ecology Research
  Ecosystems
  Nature
  Sustainability
  Extreme Survival
   

  Ecosystem

  In ecology, the word ecosystem is an abbreviation of the term, ecological system. Some consider this the basic unit in ecology. Ecosystems are not to be confused with biomes because they are smaller ... > more
• Caving
  Geography
  Global Warming
  Water
  Earth Science
  Rainforests
   
  

  Cave

  A cave is a natural underground void large enough for an adult human to enter. Some scientists stipulate that it must be large enough that some portion of it will not receive daylight; however, in ... > more
• Geography
  Global Warming
  Climate
  Environmental Issues
  Earth Science
  Oceanography
   
  

  Gulf Stream

  The Gulf Stream, together with its northern extension, the North Atlantic Drift, is a powerful, warm, and swift Atlantic ocean current that originates in the Gulf of Mexico, exits through the Strait ... > more
• Volcanoes
  Natural Disasters
  Snow and Avalanches
  Geography
  Global Warming
  Water
   
  

  Mount Rainier

  Mount Rainier is a composite volcano in Pierce County, Washington, located 54 miles (87 km) southeast of Seattle, Washington, in the United States. It is the highest peak in the Cascade Range, with a ... > more
• Tsunamis
  Natural Disasters
  Earth Science
  Geomagnetic Storms
  Geology
  Near-Earth Object Impacts
   
  

  Tide

  Tides are the cyclic rising and falling of Earth's ocean surface caused by the tidal forces of the Moon and the Sun acting on the Earth. Tides cause changes in the depth of the sea, and also produce ... > more
• Earthquakes
  Natural Disasters
  Tsunamis
  Geology
  Earth Science
  Geography
   
  

  New Madrid Seismic Zone

  The New Madrid Seismic Zone, also known as the Reelfoot Rift or the New Madrid Fault Line, is a major seismic zone located in the Midwestern United ... > more
• Water
  Nature of Water
  Drought Research
  Environmental Issues
  Ecosystems
  Pollution
   
  

  Water

  Water is a tasteless, odorless, and nearly colorless (it has a slight hint of blue) substance in its pure form that is essential to all known forms of life and is known also as the most universal ... > more
• Atmosphere
  Air Quality
  Air Pollution
  Climate
  Geochemistry
  Environmental Issues
   
  

  Earth's atmosphere

  Earth's atmosphere is a layer of gases surrounding the planet Earth and retained by the Earth's gravity. It contains roughly 78% nitrogen and 21% oxygen 0.97% argon and carbon dioxide 0.04% trace ... > more
• Climate
  Global Warming
  Renewable Energy
  Sports Science
  Petroleum
  Fossil Fuels
   
  

  Methane

  Methane is a significant and plentiful fuel which is the principal component of natural gas. Burning one molecule of methane in the presence of oxygen releases one molecule of CO2 (carbon dioxide) ... > more

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