1. Settlements change for many reasons. 

2. Over the decades, cities have attracted people from all parts surrounding them as people migrated in search of livelihood, jobs etc. 

3. This resulted in different types of slum areas or areas of the poor in the city. 

4. Some are regularized and the rest are unauthorized colonies. 

5. These places at a later time demarcated for other purposes. 

6. People face constant threats of eviction. 

7. Planning authorities ignore the existence of these and these colonies do not receive many public amenities. 

8. Increasing urbanization is providing greater opportunities for people and causes more economic productivities. 

9. Apart from that, people face many problems.

(OR)

1. Agriculture brought about many changes in human lifestyles. 

2. People do not have to travel over large areas to obtain food. 

3. They could now increasingly stay in one place. As agriculturalists, they were increasingly sedentary. 

4. As agriculture progressed, people organized their life around patterns observed in nature. 

For example, the seasonal cycles, how to predict climatic conditions, how to plan the timing at cropping practices and so on.

5. They also had time to speculate on other things – The movements of heavenly bodies. 

6. Population size also increased.