Thousands of layers of sedimentary rock confirm the long history of
the changing surface of the earth and the changing life forms whose remains
are found in successive layers. The youngest layers are not always found
on top, because of folding, breaking, and uplift of layers.
NSES Content Standard D
Earth and Space Science: Earth's history Grades 5-8, page 160 The Earth processes we see today, including erosion, movement of lithospheric plates, and changes in atmospheric composition, are similar to those that occurred in the past. Earth history is also influenced by occasional catastrophes, such as the impact of an asteroid or comet. NSES Content Standard D
NSES Content Standard D
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