What are the advantages of generating hydroelectricity ?

What are the disadvantages of generating hydroelectricity ?

What are the advantages of nuclear energy?

What are the advantages of connecting electrical devices in parallel with the battery instead of connecting them in series?

What are the advantages of ocean thermal energy?

Write three advantages of friction ?

State the advantages of solar cells.

How are the advantage of detergents over soaps?

what is the advantage of frquency modulation .