Ответьте на вопросы пж:
1.Can a fire be a means of communication? How?
1.Может ли пожар стать посредством коммуникации?Как?
2.Can a swallow be a means of communication?How?
2.Может ли ласточка стать посредством коммуникации?Как?
3.Can rocks be a means of communication? How?
3.Может ли скалы стать посредством коммуникации?Как?

1 A fire can be a means of communication. Some tribes in America and Africa used fire smoke as signals warning of danger.

2 I can't think of the way to use swallows for communication.

3 Rocks can be a means of communication and they were - when people lived in caves thousands of years ago, they drew pictures on the rocks - petroglyphs and pictographs.