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.
Kyoto cannot possibly achieve itsultimate goal of reversing the global climate changetrend.In addition, the chosen emission reductiontargets lack any scientific or economic foundation.The Protocol stipulates that each Annex I nation re-duce GHG emissions by an average of 5% from 1990levels.