Sea levels have risen by about 18 centimeters on average since 1990. The threat posed by melting ice not only puts some well-known cities at risk of being submerged, but also directly affects the distribution of earth's gravity as the melting of arctic ice accelerates. In addition, retreating glaciers and melting water in the Arctic are leaking methane on a massive scale, which will have a major impact on the global climate.
what the text says?
Melting glaciers will pose many potential dangers to the planet