Which of the following is not a cause of mental disorders? a) injury. b) genetics. c) poor diet. d) physical disorder.

I believe it's poor diet hope I helped

Africa has 54 countries

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.