Global warming is causing sea level rise through thermal expansion of water and melting glaciers, which can lead to flooding that forces people to relocate. This causes social issues like population displacement and political issues such as collapsed systems from overwhelmed demands on governments. It also leads to high costs to build new homes and lost agricultural land. Droughts from increased temperatures can create or expand deserts, forcing migration and causing conflicts over water between nations as well as impaired economies from lack of exports. Heavy rainfall in some areas causes temporary flooding that requires population movement and costly restoration aided by other countries. Changes in water temperatures disrupt ecosystems and fishing industries. Natural disasters exacerbated by climate change result in loss of life, challenges for governments to restore areas,

2. Global warming on water management Comenius project 2009-2010 Group 10