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  2. Five themes of geography - Wikipedia

    en.wikipedia.org/wiki/Five_themes_of_geography

    The influence of the five themes can still be found in many standards, such as the National Council for the Social Studies (NCSS) Standards for elementary grades. [9] With the increase of emphasis placed on standardized testing in the United States, social studies, and thus geography, is receiving less time in elementary classrooms. [10]

  3. Earth - Wikipedia

    en.wikipedia.org/wiki/Earth

    Earth orbits the Sun, making Earth the third-closest planet to the Sun and part of the inner Solar System. Earth's average orbital distance is about 150 million km (93 million mi), which is the basis for the astronomical unit (AU) and is equal to roughly 8.3 light minutes or 380 times Earth's distance to the Moon .

  4. Earth science - Wikipedia

    en.wikipedia.org/wiki/Earth_science

    Earth science or geoscience includes all fields of natural science related to the planet Earth. [1] This is a branch of science dealing with the physical, chemical, and biological complex constitutions and synergistic linkages of Earth's four spheres: the biosphere , hydrosphere / cryosphere , atmosphere , and geosphere (or lithosphere ).

  5. Landform - Wikipedia

    en.wikipedia.org/wiki/Landform

    Elementary landforms (segments, facets, relief units) are the smallest homogeneous divisions of the land surface, at the given scale/resolution. These are areas with relatively homogeneous morphometric properties, bounded by lines of discontinuity. A plateau or a hill can be observed at various scales, ranging from a few hundred meters to ...

  6. Third grade - Wikipedia

    en.wikipedia.org/wiki/Third_grade

    In Brazil, third grade is the terceiro ano do Ensino Fundamental I, in this case, children begin their first year of elementary school at age 6 or 7 depending on their birthdate. Therefore, the 3rd year of elementary school is typically for students of 8 (96 months)–9 years (108 months) of age.

  7. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

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