Question

.Which creatures can not detect ultrasonic waves?​

Answer 1

Answer:

We cannot hear ultrasound (it has a frequency above 20,000 Hz, the upper limit of human hearing). However animals, such as dogs, bats, and dolphins, can hear these very high-pitched sounds. Bats use ultrasound to 'see' trees and insects at night.

Answer 2

Answer:

those creature which have an audible frequency of less than 20000 hertz