Question

click to correct the two capitalization errors.
the grand canyon, located in the northern part of arizona, is the result of millions of years worth of erosion by the colorado river.
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Explanation:

1. "Northern" should not be capitalized here because it is a general directional adjective describing "part," not a specific named region.
2. "river" should be capitalized as "River" because it is part of the proper name "Colorado River," a specific geographic feature.

Answer:

The Grand Canyon, located in the northern part of Arizona, is the result of millions of years' worth of erosion by the Colorado River.