Question

state 2 conditions for echo to be heard . bats cannot see still they catch their prey . explain

Answer 1

TWO CONDITIONS FOE ECHO TO BE HEARD

1. THERE SHOULD BE NO ABSORBING MATERIAL

2. MINIMUM DISTANCE 17 M

BAT EMIT ULTRASONIC WAVES. WHEN THE WAVES REACH A PREY THE WAVES BOUNCES BACK INFORMING THE BAT.