What are one advantage and one disadvantage to the construction of a dam on a river?

Answer 1

Advantages of dams:

1. Dams are constructed based only on safety
2. It is used to store water
3. It used in hydroelectric power generation
4. It is used in irrigation purposes.

Disadvantages of dams:

1. Requires skilled labour to construct
2. Strong abutments is needed.
   

Answer 2

One advantage is that it acts as a stable water source (which can be used to generate electricity or provide water for people). However, a disadvantage to this is that the production of dams generates large carbon dioxide emissions from the cement laying, and any migratory patterns of fish will be disrupted (such as the breeding cycle for salmon).

Answer 3

the turbines are designed to operate at a higher head (pressure), you also don't generate as much energy so you need more dams with more transmission lines