Why are antennas needed for radio television and cell phone transmission A) without a long antenna, the signal will not travel very far
b) the antenna allows you to direct your signal toward the intended target
c )the sound waves require a meatal surface to bounce off
d) EM waves are created by oscillating electrons within the antenna

You are a sales representative for a company that makes a new alternate fuel for vehicles. you have prepared a presentation for the environmental engineers to sell your new product. what question do you expect the audience to ask regarding whether the new fuel will cause less damage to the environment? a. do we have to change any parts of the vehicle to use this alternate fuel? b. will the vehicles get better fuel mileage with the alternate fuel? c. how much greenhouse gas does your fuel produce compared with current fuel sources? d. is the alternate fuel more expensive than fossil fuel?