Answer:
A signal is an electromagnetic or electrical current that is used for carrying data from one system or network to another. The signal is a function that conveys information about a phenomenon.
In electronics and telecommunications, it refers to any time-varying voltage that is an electromagnetic wave which carries information. A signal can also be defined as an observable change in quality such as quantity
Explanation:
thats it
National Liberation Front
It's a political party or political parties
The effectiveness of direct mail advertising suffers from: <span>the consumer perception that it is junk mail
especially in this modern day and age, an average person could receive up to a hundred emails and news letter per day.
Not only that, many of the cunsomer also often suspicious since a lot of crime conducted through marketing email</span>