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.
India is the world's third biggest greenhouse gas emitter (not including the European Union) but has pledged to source 40% of its electricity from renewable and low-carbon sources by 2030. The country is home to 13 of the 20 most polluted cities in the world, according to a World Health Organization report.