ответьте на вопросы : 1.can a fire be a means of communication? how? 1.может ли 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.