The ratio of compressions to ventilations in adult cpr is 20 to 4. 30 to 2. 15 to 1. 5 to 1.

CPR or Cardiopulmonary Resuscitation is a technique used in emergency cases for people who become suddenly unconscious without the presence of pulse and respiration upon assessment. The ratio of compressions to ventilations in adult CPR is 30:2. Compressions per minute should be 100-120 compressions. 

Magnesium! this is found if caves usually

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.