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Level W

Acropolis Adventure
Adventure in Bear Valley
Albert Einstein
Alberto Salazar: An American Runner
American Sports Legends
Atlantic Crossing
Ben Franklin
Catching Air
Climbing Mountains: An Interview with Erik Weihenmayer
Desert People
Discovery in the Americas?
Earthquakes, Volcanoes, and Tsunamis
Electric Cars: History and Future
Hurricanes
Influenza
Joe Kittinger: An Unsung Hero
Mapping the Woods: Maps and Cartography
Microbes: Friend or Foe?
Miguel in the Secret Garden
Mummies
Ocean Quiz
Otzi: The Iceman
Pirates and Privateers
Robin Hood and the King
Ships of Discovery
The Black Stones
The Mystery of Granville Library
The Olympics: Past and Present
The World of NASCAR
The Yanomami: Deep in the Amazon
Threats to Our Atmosphere
Vikings
Threats to Our Atmosphere Threats to Our Atmosphere
nonfiction
Words Included:
   atmosphere
   chemical
   constant
   contributor
   decompose
   fossil fuel
   global warming
   greenhouse effect
   molecule
   pollutant
   precipitation
   ultraviolet radiation
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Book Summary:
Threats to Our Atmosphere is an informational book that focuses on the structure and function of Earth's protective atmosphere. The text explains the ozone layer and the possible causes and consequences of global warming. The book also explores what effects these issues have on our planet, what scientists and world leaders are doing to protect our environment, and what individuals can do to protect our sky. Photographs, diagrams, and charts support the text.
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