Climate change is already imposing a significant burden on all countries, extreme in some cases. Several small-island developing States are facing the realistic risk of becoming completely submerged under water due to sea-level rise. Severe drought and shortage of water are endangering livelihoods around the world and, the warming of surface temperatures and changing weather patterns and threatening human lives. Warming has contributed to the change in vegetation and distribution of fish species at the global level, and to the spread of vector-borne diseases to wider areas. People living in coastal zones are facing greater risks of floods and storm surges and people living in mountainous areas are becoming more exposed to the risk of landslides and soil erosion.