Questions

A rift valley is formed either due to upheaval of blocks on either sides of a fracture or due to subsidence of block between them.

Full-service airline Jet Airways has announced a partnership with ride-hailing app Uber to book airport cabs through the Jet Airways app itself. The airline will partner Uber and facilitate travel from the airport once a passenger has booked a ticket on the Jet Airways app.

Pyrenees, a chief mountain in Europe, forms a part of the great mountain across Europe and Asia.

Secondary pollutants include ozone, which is formed when hydrocarbons (HC) and nitrogen oxides (NOx) combine in the presence of sunlight.

Whereas Primary pollutant are those pollutants that are directly emitted from their sources, like CO2, CO, SO2 as these gases are directly emitted form burning of fossil fuels.

Acid rain, which is formed when sulfur dioxide or nitrogen oxides react with water, sulfuric acid etc.

Hence, Acidrain is a secondary air pollutant.

Hierarchy is a system of ranking in which members of a particular society are ranked in an ascending order depending on various factors.

Hence, the term hierarchy refers to a power structure in which each member knows his or her own place.