Bats cry in such a high pitch that we cannot process the frequency.
Bats. They are blind and use echolocation to navigate when they are flying. They emit high pitched sounds humans ears are unable to hear. The sound frequency in a human voice is too low pitched for them to hear.
forgive me for answering a question with a question, but WHERE DID YOU HEAR THAT NON SENSE?
Unable to hear.
Most people do not hear the sonar signals used by animals, such as bats or dolphins.
Bats can hear every thing around them
Unable to hear.
In physics, deaf people, who may not be able to hear each other, would be unable to communicate audibly about the subject. However, they can still use other forms of communication such as sign language, written text, or visual aids to discuss and learn about physics.
Because their hearing apparatus (ear) is not tuned to hear ultrasound.
Deafness is when somone is unable to hear anything.
No, if you are born deaf or become deaf later in life, you are unable to hear sounds. However, some deaf people learn to "feel" sound waves, and therefore giving them some perception of sound.
bat
an audience