Explain the term ‘Golden Quadrilateral’.

Who are called red collar workers ?

Mention any two characteristics of sub-urbanisation.

How is density of population of a region calculated ?

Explain with examples the ‘population size’ criteria used by most countries to define urban areas.

In which country are motorways called ‘autobahns’ ?

What two factors mostly helped in the development of ancient towns in India ?

Explain any three characteristics of clustered rural settlements of India.

‘‘The knowledge about nature is extremely important to develop technology.’’ Support this statement by giving three examples.

Mention any two sources of water pollutants created by humans.