Drinking water treatment involves all of the following except: a. removal of organic materials b. destruction of microorganisms c. removal of large inorganic particles d. removal of all dissolved chemicals e. none of the above

Depression is lifelong, though you can get medication to with it. the difference between sadness and depression is that sadness lasts a little bit, depression last a long time and it goes on and off. people usually get depression through experiences they have been through, or genetics.

It would be 23 beats per second