They shall describe constructive and destructive forces of nature, such as glaciers, earthquakes, and erosion, and shall explain how humans impact the earth's surface.
(They; shall describe; constructive and destructive forces of nature, such as glaciers, earthquakes, and erosion) (They; shall explain; how humans impact the earth's surface) Context(They shall explain,List([0, 128))):(humans; impact; the earth's surface)
They shall explain,List([0, 128))
They They humans
shall describe shall explain impact
constructive and destructive forces of nature, such as glaciers, earthquakes, and erosion
how humans impact the earth's surface
the earth's surface