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Definition of word from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games.

Known for the ACT test, a college entrance exam, ACT is a nonprofit organization offering educational and workplace measurement and research services.

The Earth Observing System (EOS) is a coordinated series of polar-orbiting and low inclination satellites for long-term global observations of the land surface, biosphere, solid Earth, atmosphere, and oceans. EOS is a major component of the Earth Sci...

Provides educational movies for K-3 students. Homework Help, leveled quizzes, games and activities for kids. Exceptional resource for teachers and homeschools.

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GOOS: Global Ocean Observing System is a IOC/UNESCO/WMO/UNEP/ICSU sponsored UN coordination body.

NASA Earth Observations, exploring NASA