People can hear sound over a wide range of _________.
Many animals can hear ______ that are outside the range of human hearing.
People, dogs, and bats have parts of their ____ on the outside of their bodies.
But, ______ and _____ do not have parts of their ears on the outside of their bodies.
Many animals ______ by making noises. Some sounds animals make are too high or too low for humans to hear.
Do all humans hear in the same way that animals do?
Echos and Vibrations
What are tow ways in which animals sense vibrations?