Exercise 8 - Part 1
For questions 1-8, think of the best word to complete each sentence.
Artificial glare has banished darkness, allowing activity to continue continuously. While this advancement improves safety, it introduces an ecological crisis known as light pollution. Excess lighting brightens the night sky, heavily (1) with natural ecosystems. Many nocturnal animals rely on darkness to hunt, making them highly (2) to predators. Migratory birds become disoriented by glowing skylines. This disruption causes severe population declines, threatening biodiversity. Human health is also endangered, as constant exposure to nighttime light suppresses melatonin, throwing sleep cycles off track. Specialists warn that chronic sleep deprivation can have a devastating (3) on long-term physical health. Environmental groups are actively lobbying councils to (4) dark sky initiatives. Dimming streetlights saves money and lowers carbon emissions simultaneously. Failing to act ensures that stars will completely (5) from view. We must design cities to respect biological patterns rather than constantly (6) them with glare. Local communities must show a true (7) to change habits. Only then can these artificial threats finally begin to fade (8) safely.