Respected Sir/Mam

What is hydrological cycle?

what are mutipourpose river vally projects what are its objectives?

what are the disadvantages of water harvesting?

These are the Quotions of difficulty for me...

thank you......

1. What is hydrological cycle?

• Hydrological cycle refers to the constant movement of water on, above and below the surface of the Earth. Water changes from one state to another :liquid, vapor, and ice at various places in the water cycle.

2. what are multipurpose river valley projects. what are its objectives?

• Multi-purpose river valley projects have dams built on rivers. It refers to the dams that are built not just for irrigation but for electricity generation, water supply for domestic and industrial uses, flood control, recreation, inland navigation and fish  breeding.

3. what are the disadvantages of water harvesting?

• High Initial investment Costs
• Regular Maintenance 
• Supply is Climate Dependent 
• Storage Capacity Limits Supply