1 Substance abuse. Abuse of drugs and alcohol can contribute to panic disorder.  Major life stress. Stressful events and major life transitions, such as the death of a loved one, can sometimes trigger panic attacks, which can potentially recur and go on to become panic disorder.
Zero emission refers to an engine, motor, process, or other energy source, that emits no waste products that pollutes the environment or disrupts the climate. Contents.
Zero carbon refers to zero carbon dioxide emissions. It is a scientific term and a scientific reality for climate change mitigation. If any industrial pollution CO2 is added to the atmosphere stabilization of atmospheric CO2 cannot happen-that is the scientific reality.