Artificial light interferes with humans' ability to view the night sky because artificial light leads to poor nighttime vision.
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Answer:
Explanation:
Joe, the coach, is sick.
Appositive Comma: A comma that is placed when a noun is right next to another descriptive noun.
<u><em>Joe</em></u> is the noun. He is the person, out of the person, place, thing and idea.
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<u><em>The coach </em></u>is also a noun that is describing the coach.
The comma has been placed to separate the two nouns. The coach helps describe Joe.
