Warm water coral reefs are very sensitive to global warming and ocean acidification. Related impacts include ocean circulation changes, increased input of freshwater, and ocean acidification. The calcification processes are changed by ocean acidification. Release of SO also contributes to the widespread acidification of ecosystems. Environmental problems such as soil erosion, acidification, and loss of vegetation are being addressed. Besides hunting, baleen whales also face threats from marine pollution and ocean acidification. The most important gas which leads to acidification is sulfur dioxide. Higher atmospheric concentrations have led to an increase in dissolved CO, which causes ocean acidification. Geoengineering has been proposed as a possible response to ocean acidification. The method exploits the reactivity of nitrous acid derived from acidification of nitrite. One removes inorganic carbon by acidification and purging. Other organisms are directly harmed as a result of acidification. However, this also leads to ocean acidification, which may harm marine life. One way this can occur is through ocean acidification. Precipitated silica or amorphous silica is produced by the acidification of solutions of sodium silicate.