Chemists, biologist, pharmacist, medical researcher ect…
Answer:
B or D
Explanation:
.....I'm pretty sure I earned on some kids tv show
Answer:
music amplifier or a loudspeaker
Explanation:
A music amplifier or a loudspeaker are a few devices that convert electrical energy into sound energy.
As it is a well known fact that energy can neither be created nor be destroyed it can only change from one form to the other. As here it is changing from electrical to sound.
Bed rock is a layer underneath minerals
