What can be used for communication by animals?
books Electrical energy electromagnetic energy nails chemical messengers mechanical waves encoded information ice
A B C D E F G H
Sound Sound waves are mechanical waves.
mechanical waves can be used for communication by animals
What can be used for communication by animals? (A) books (B) Electrical energy (C) electromagnetic energy (D) nails (E) chemical messengers (F) mechanical waves (G) encoded information (H) ice