What are the major geographical events caused by climate warming?

Global warming caused the polar ice sheet to melt and the sea level to rise. The sea level only rose by 1 m, resulting in 56 million people becoming refugees. The world's first inhabited island submerged by seawater is about to surface, Katri Island in Papua New Guinea, a South Pacific country. In the past 40 years, the Amazon rainforest has disappeared by 20%.