Questions

The Law of Demand tells that, if the price of a product increases then the demand will go down i.e, decreases iff all other things equal.

An occluded front is a type of weather front formed in the process of cyclogenesis when a cold front is overtaken a warm front. When this happens, the warm air is separated from the cyclone center at the Earth's surface.

An occluded front likely bring much precipitation kind of weather.

The term PIL refers to Public Interest Litigation.

Public Interest Litigation was originated in United States in 1980's. 

Public Interest Litigation is directly filed by an individual or group of people in the Supreme Court of India and High Courts and judicial member.  This petition is accepted by the court only if there is interest of large public involved. Generally this petition is filed by a public spirited person or organisation, if it was felt that certain interests are undermined by the government.