Answer: False
Explanation: This is FALSE because the bats make a high frequency sound and we can't hear that type of sound.
They are involved in a chemical digestion.
Chemical digestion involves breaking down the food into simpler nutrients that can be used by the cells. It begins in the mouth when food mixes with saliva which contains enzyme salivary amylase that breaks down carbohydrates. It also occurs in the stomach where HCl and pepsin forms chyme and small intestine especially in the duodenum.
Because of the moons gravitational pull, is strong enough to pull the ocean around... I hope that helps!