Malnutrition, dehydration and related diseases Mass migration, resulting in internal displacement and international refugees Reduced electricity production due to reduced water-flow through hydroelectric dams[3] Shortages of water for industrial users[4][5] Snake migration, which results in snake-bites[6] Social unrest War over natural resources, including water and food Wildfires, such as Australian bushfires, become more common during times of drought and may cause human deaths.[7] Exposure and oxidation of acid sulfate soils due to falling surface- and ground-water levels.[8][9][10] Cyanotoxin accumulation within food chains and water supply (some of which are among the most potent toxins known to science) can cause cancer with low exposure over the long term.[11] High levels of microcystin appeared in San Francisco Bay Area salt-water shellfish and fresh-water supplies throughout the state of California in 2016.