Which of the following is characteristic of both weathering and erosion?
a. occurs naturally
b. caused by burrowing animals
c. occurs with movement
d. caused by the pull of gravity

Weathering, by definition, is the physical integration and chemical decomposition of earth materials at or near the earth’s surface. Erosion, by definition, is the gradual destruction of something by natural forces (e.g. water, wind, ice). Therefore, the characteristic of both weathering and erosion is that it occurs naturally.

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