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210 Arrow-Puffin-2_Semester-2 EVS4. Radio is an audio - visual means of communication. [ ]5. It is not right to carry mobile phones to school. [ ]III. Answer the following questions.1. What is communication? __________________________________________________________ __________________________________________________________2. What are the different means of mass communication? __________________________________________________________ __________________________________________________________3. Why are mobile phones popular? __________________________________________________________ __________________________________________________________4. How can you send urgent messages by post? __________________________________________________________ __________________________________________________________5. How is the internet useful? __________________________________________________________ __________________________________________________________Artificial Satellites are objects that move around the Earth and other planets. They are sent into space by scientists and stay in their orbit.Know MoreIs television more useful than a radio ? Hots