Geographers explore both the physical properties of Earth's surface and the human societies spread across it. They also examine how human culture interacts with the natural environment, and the way that locations and places can have an impact on people.
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August 7-19 The first national health conference
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The ozone layer shields Earth from the sun's ultraviolet rays, which increase the risk of cancer and threaten crops and aquatic life.
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Human-produced chemicals called chlorofluorocarbons (CFCs) made headlines in the 1980s when it became clear they were eating a hole in the ozone layer above Earth's polar regions.
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Many factory for example - alcohol was seen as a destructive force in families and marriages. owners supported prohibition in their desire to prevent accidents and increase the efficiency of their workers in an era of increased industrial production and extended working hours. president Woodrow Wilson instituted a temporary wartime prohibition in order to save grain for producing food.
Hoped this Helped .
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