How many electrons are needed in the outer energy levels of most atoms to be chemically stable?​

An electrons position cannot be known precisely only it's probability of being in a certain location can be known

Which of the following natural processes is most likely to support the formation of an underwater sinkhole? a pollution buildup from deposited minerals b limestone cave collapsing due to changes in sea level c erosion of large amounts of sand moved by ocean waves d oxidation of rock formed by chemical weathering

Who examines and coordinates the cleanup of polluted sites?