Duolingo English Test Writing
Writing Sample
Duolingo Writing
In many cities, the night sky has become so bright with artificial light that the stars are nearly invisible. This "light pollution" affects not only astronomers but also wildlife and human health. Describe what causes light pollution and how it affects living things, and explain what individuals or cities could do to reduce it. Use specific examples to support your answer.
0 words · aim 50–120
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