GK
INDIAN CULTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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increase in ice sheets, decreasing sea levels
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horses being introduced to North America
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rising ocean temperatures
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melting glaciers exposed a land bridge
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Detailed explanation-1: -Like a glacier, an ice sheet forms through the accumulation of snowfall in areas where annual snowfall exceeds annual snowmelt. Over thousands of years, layers of snow build up, becoming more dense and transforming into glacial ice.
Detailed explanation-2: -Melting glaciers add to rising sea levels, which in turn increases coastal erosion and elevates storm surge as warming air and ocean temperatures create more frequent and intense coastal storms like hurricanes and typhoons.
Detailed explanation-3: -Arctic sea ice reaches its minimum extent (the area in which satellite sensors show individual pixels to be at least 15% covered in ice) each September. September Arctic sea ice is now shrinking at a rate of 12.6% per decade, compared to its average extent during the period from 1981 to 2010.