Which continent has the highest growth rate of population? 

Name the head quarter of 'South Central Railway Zone'. 

Define the term 'sex ratio'. 

Give any two examples of tertiary activities.

Which is the most significant aspect of human development? 

Define the term 'density of population'. 

Name any two natural sources of water pollutants. 

Explain any three characteristics of 'Foot Loose Industries'. 

Explain the key areas of human development. 

Who is an empowered worker?