Across
- 3. act of composing and sending electronic messages.
- 6. 'ink and paper' communication.
- 8. found on the wall or ceilings of caves.
Down
- 1. A, B, C ....
- 2. information is carried across space using radio waves.
- 4. dots and dashes.
- 5. formal writing system used in Ancient Egypt.
- 7. sent in an envelope by mail or messenger.