Where on earth is there a lot of light pollution?
Look at a night time photo of earth from space.
Major cities are represented by glowing spots, which indicate high levels of light pollution; light pollution is minimal or nonexistent in darker areas.
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Urban areas and densely populated regions tend to have a lot of light pollution. Additionally, industrialized areas and locations near major highways or airports also experience significant light pollution.
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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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