Challenge Question #1

kevin adams (
Sat, 22 Mar 1997 22:05:22 GMT

It means that it is a way of using echoes of sound to find things. Such as
a bat uses their ears to find the echoes and the vibrations of its prey.
Suzanne Thomas & Trevor Woodward, gr. 5
Bobcaygeon Public School
Bobcaygeon, Ontario
44.536 N, 78.544 W