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2. Internal structure of Earth - Wikipedia

   en.wikipedia.org/wiki/Internal_structure_of_Earth

   Earth's crust and mantle, Mohorovičić discontinuity between bottom of crust and solid uppermost mantle. Earth's mantle extends to a depth of 2,890 km (1,800 mi), making it the planet's thickest layer. [20] [This is 45% of the 6,371 km (3,959 mi) radius, and 83.7% of the volume - 0.6% of the volume is the crust].

3. Earth's crust - Wikipedia

   en.wikipedia.org/wiki/Earth's_crust

   Earth's crust is its thick outer shell of rock, referring to less than one percent of the planet's radius and volume. It is the top component of the lithosphere , a solidified division of Earth 's layers that includes the crust and the upper part of the mantle . [ 1 ]

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. Crust (geology) - Wikipedia

   en.wikipedia.org/wiki/Crust_(geology)

   The internal structure of Earth. In geology, the crust is the outermost solid shell of a planet, dwarf planet, or natural satellite.It is usually distinguished from the underlying mantle by its chemical makeup; however, in the case of icy satellites, it may be defined based on its phase (solid crust vs. liquid mantle).

6. Pennsylvania System of School Assessment - Wikipedia

   en.wikipedia.org/wiki/Pennsylvania_System_of...

   Science reporting categories include the nature of science, biological sciences, physical sciences, and earth and space sciences. On July 1, 2010, the State Board of Education adopted the Common Core State Standards in Mathematics, which will replace the Mathematics standards adopted in 1999. [10]

7. AOL Mail

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   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!

8. Science (UIL test) - Wikipedia

   en.wikipedia.org/wiki/Science_(UIL_test)

   Students in Grade 6 through Grade 12 are eligible to enter this event.. For competition purposes, Grades 6, 7 and 8 compete in separate divisions with the same test, while Grades 9-12 compete together, with separate subjects covered on each test as follows:

9. Remove Banner Ads with Ad-Free AOL Mail | AOL Products

   www.aol.com/products/utilities/ad-free-mail

   SYSTEM REQUIREMENTS. Mobile and desktop browsers: Works best with the latest version of Chrome, Edge, FireFox and Safari. Windows: Windows 7 and newer Mac: MacOS X and newer Note: Ad-Free AOL Mail ...