Use of English · Parte 3

Word FormationExercício 90 de 91

The Vanishing Night Sky

For most of human history, the stars above were so vivid that the great (0) OBSERVATORIES (OBSERVE) of antiquity could be established almost anywhere. That era is drawing decisively to a close. Artificial light (1) .......... (POLLUTE) now reaches across continents, and for the majority of people alive today the…

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