Invasive Species Articles

• Asteroids, Comets and Meteors
  Near-Earth Object Impacts
  Atmosphere
  Earth Science
  Geology
  Mars
   
  

  Meteor

  A meteor is the visible path of a meteoroid that enters the Earth's (or another body's) atmosphere, commonly called a shooting star or falling star. A meteor is a meteoroid that has entered the ... > more
• Caving
  Oceanography
  Archaeology
  Ancient Civilizations
  Water
  Evolution
   
  

  Stalagmite

  A stalagmite is a type of speleothem that rises from the floor of a limestone cave due to the dripping of mineralized solutions and the deposition of calcium carbonate. The corresponding formation ... > more
• Volcanoes
  Natural Disasters
  Sports Science
  Geology
  Nature of Water
  Biochemistry
   
  

  Volcanic rock

  Volcanic rock is an igneous rock of volcanic origin. Volcanic rocks are usually fine-grained or aphanitic to glassy in texture. They often contain clasts of other rocks and phenocrysts. Phenocrysts ... > more
• Air Quality
  Forest
  Global Warming
  Geochemistry
  Climate
  Pollution
   

  Activated carbon

  Activated carbon (also called activated charcoal) is the more general term which includes carbon material mostly derived from charcoal. It denotes a material which has an exceptionally high surface ... > more
• Sun
  Geomagnetic Storms
  Solar Flare
  Renewable Energy
  Atmosphere
  Northern Lights
   
  

  Solar radiation

  Solar radiation is radiant energy emitted by the sun, particularly electromagnetic energy. About half of the radiation is in the visible short-wave part of the electromagnetic spectrum. The other ... > more
• Oil Spills
  Petroleum
  Energy and the Environment
  Geology
  Earthquakes
  Sports Science
   
  

  Petroleum geology

  Petroleum geology refers to the specific set of geological disciplines that are applied to the search for hydrocarbons (oil exploration). Petroleum geology is principally concerned with the ... > more
• Geology
  Sports Science
  Climate
  Chemistry
  Inorganic Chemistry
  Nature of Water
   
  

  Metamorphic rock

  Metamorphic rock is the result of the transformation of a pre-existing rock type, the protolith, in a process called metamorphism, which means "change in form". The protolith is subjected to heat and ... > more
• Volcanoes
  Natural Disasters
  Atmosphere
  Geology
  Tsunamis
  Caving
   
  

  Shield volcano

  A shield volcano is a wide volcano with shallowly-sloping sides. Shield volcanoes are formed by lava flows of low viscosity - lava that flows easily. Consequently, a volcanic mountain having a broad ... > more

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