About 10 percent of the world’s surface is glacial ice, which can be sheets, ice caps, or glaciers. While this may sound like a very small percentage, remember too that it contains 75 percent of the earth’s fresh water. In other words, if they start melting, then you can expect water levels to rise. This can be very dangerous since low-lying lands may disappear over time. This can then lead to serious human displacement, among others.
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