Question

main difference between traditional and modern dams

Answer 1

Ans.i). A dam is a barrier across the flowing water that obstructs, dissects or retards the flow, often creating a reservoir lake or an impoundment. ii). It is a traditional concept.

Multipurpose project i). A multipurpose project is that which fulfils a variety of purposes at the same time, 

Answer 2

a dam is a barrier that stops  or restrict  the flow of water  or underground steam . modern method 
- electricity generation 
- built of cement  ,  and cover a large  part of Accessible  river 
- cause  harm to livelihood  of people leaving near the dam  area while construction  
 traditional method 
-irrigation 
- built out of rubble  and stone 
- did not cause harm while construction 
                                                            i hope it will help you