What type of signal often advertises the presence of an animal or group of animals?

A) chemical
B) pheromone
C) visual
D) acoustical
E) tactile

Acoustical Signals

Sounds or vibrations used for communication or detection in various organisms and technologies.

Chemical

A substance produced by or used in a chemical process.

Visual

Relating to the sense of sight, involving the ability to see, or the processing of visual information by the brain.