1881. Bats can also fly in dark because they are capable of taking the help of ____?
✅ A. Ultrasonic Waves
✅ A. Ultrasonic Waves
✅ A. Dare
✅ D. 10 hours
✅ B. Seasonal reversal of winds
✅ A. Small electric sparks
✅ D. Nickel
✅ B. Meter cube
✅ A. Filter out ultraviolet rays
✅ A. Clouds
✅ C. First Observation of Gravitational Waves