Mention any two characteristics of sub-urbanisation.

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

Explain the term ‘Golden Quadrilateral’.

How is density of population of a region calculated ?

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

In which country are motorways called ‘autobahns’ ?

Mention any two sources of water pollutants created by humans.

Who are called red collar workers ?

Explain any three characteristics of clustered rural settlements of India.

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