People who have been submerged in very cold water, and presumed drowned, have sometimes been revived. By contrast, people who have been submerged for a similar period of time in warmer water have not survived. Suggest reasons for this difference. I know this has to do with the fact that higher temperatures increase the rates of reaction because more particles collide with enough energy to react. But I am not sure of how to relate that to this question. Thanks!