A local town proposes switching to hydro-power for its electricity needs. Which of the following is a disadvantage of this plan?

A. It is a new type of power that other towns have not tried.
B. It could cause flooding and displace wildlife.
C. It relies on wind activity, so power could change with the weather.
D. It produces carbon dioxide and other pollutants.

b hope this helps

Explanation:

trust me

in this image, you can see solar radiation going through ocean water.

no image, but probably absorption

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia