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• Infant's Health
  Healthy Aging
  Attention Deficit Disorder
  Food
  Sports Medicine
  Air Quality
   
  

  Pesticide poisoning

  Pesticide poisonings, where chemicals intended to control a pest affect non-target organisms such as humans, wildlife, or bees. Since label directions required by the FIFRA are specifically designed ... > more
• Gynecology
  Fungus
  Microbiology
  Beer and Wine
  Genetics
  Geochemistry
   
  

  Yeast

  Yeasts constitute a group of single-celled (unicellular) fungi, a few species of which are commonly used to leaven bread, ferment alcoholic beverages, and even drive experimental fuel cells. Most ... > more
• Energy and the Environment
  Petroleum
  Renewable Energy
  Environmental Science
  Oil Spills
  Fossil Fuels
   
  

  Biodiesel

  Biodiesel refers to a diesel-equivalent, processed fuel derived from biological sources. Though derived from biological sources, it is a processed fuel that can be readily used in diesel-engined ... > more
• Nature
  Sustainability
  Ecology
  Biodiversity
  Environmental Policy
  Endangered Plants
   
  

  Conservation ethic

  The conservation ethic is an ethic of resource use, allocation, exploitation, and protection. Its primary focus is upon maintaining the health of the natural world: its forests, fisheries, habitats, ... > more
• Recycling and Waste
  Hazardous Waste
  Environmental Science
  Environmental Issues
  Earth Science
  Grassland
   

  Activated sludge

  Activated sludge is a process in sewage treatment in which air or oxygen is forced into sewage liquor to develop a biological floc which reduces the organic content of the ... > more
• Acid Rain
  Sports Science
  Heartburn
  Pollution
  Gastrointestinal Problems
  Vitamin B
   
  

  PH

  pH is a measure of the activity of hydrogen ions (H+) in a solution and, therefore, its acidity or alkalinity. Aqueous solutions with pH values lower than 7 are considered acidic, while pH values ... > more
• Nuclear Energy
  Weapons Technology
  Energy and the Environment
  Mining
  Renewable Energy
  Pollution
   
  

  Uranium

  Uranium is a chemical element in the periodic table that has the symbol U and atomic number 92. Heavy, silvery-white, toxic, metallic, naturally radioactive, pyrophoric, and teratogenic uranium ... > more
• Nuclear Energy
  Weapons Technology
  Energy and the Environment
  Renewable Energy
  Sports Science
  Physics
   
  

  Plutonium

  Plutonium is a radioactive, metallic, chemical element. It has the symbol Pu and the atomic number 94. It is the element used in most modern nuclear weapons. The most important, albeit not most ... > more
• Mating and Breeding
  New Species
  Extinction
  Life Sciences
  Wild Animals
  Agriculture and Food
   
  

  Rotifer

  The rotifers make up a phylum of microscopic, and near-microscopic pseudocoelomate animals. There are a variety of different shapes of rotifer. There is a well-developed cuticle which may be thick ... > more
• Air Pollution
  Acid Rain
  Geochemistry
  Organic Chemistry
  Soil Types
  Organic
   
  

  Nitrogen

  Nitrogen is the chemical element in the periodic table that has the symbol N and atomic number 7. Nitrogen constitutes 78 percent of Earth's atmosphere and is a constituent of all living tissues. ... > more

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