Pollution occurs in different forms; air, water, soil, radioactive, noise, heat/ thermal and light. Every form of pollution has two sources of occurrence; the point and the non-point sources. The point sources are easy to identify, monitor and control, whereas the non-point sources are hard to control.
Communication is a means of passing an information signal from source (sender) to a recipient (receiver) in such a way that the message is understood. communication is the act of interaction,sharing ideas and information between two peoples.
(http://en.wikipedia.org/wiki/Communication ) The elements of communication Communication is a two-way process that results in a shared meaning or common understanding between the sender and the reciever. An understanding of how communication works can help us to understand and improve our communication. The basic communication model consists of five elements of communication: the sender, the receiver, the message, the channel and feedback. Sender The sender plays the specific role of initiating communication. To communicate