Light pollution is excessive, misdirected, or obtrusive artificial (usually outdoor) light. Too much light pollution has (1) __________effects on people. I washes out starlight in the night sky, disrupts ecosystems, has adverse health effects, and wastes energy.With respect to adverse health effects, many species, (2) ___________humans, are dependent on natural body cycles, and the production of melatonin, which are regulated by light and dark (e.g., day and night). If humans are exposed to ...

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07/09 15:24:06 (Tiếng Anh - Lớp 12)
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Light pollution is excessive, misdirected, or obtrusive artificial (usually outdoor) light. Too much light pollution has (1) __________effects on people. I washes out starlight in the night sky, disrupts ecosystems, has adverse health effects, and wastes energy.With respect to adverse health effects, many species, (2) ___________humans, are dependent on natural body cycles, and the production of melatonin, which are regulated by light and dark (e.g., day and night). If humans are exposed to light (3) ________sleeping, melatonin production can be affected. This can lead to sleep disorders and other health problems such as increased headaches, worker fatigue, medically defined stress, some forms of obesity due to lack of sleep and increased anxiety. And ties are being (4) ________ to a couple of types of cancer. There are also effects of glare on aging eyes. Heath effects are not only due to over-illumination or excessive (5) ________of light over time, but also improper spectral composition of light.

Too much light pollution has (1) __________effects on people.
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