Bat's need excellent hearing because without hearing they wouldn't be able to find there way through the DARK cave , cause bats use "eco" to find there way around the cave and without excellent hearing they wouldn't be able to hear there eco and without hearing there eco they bat will not find it's way around
We're getting near Halloween and it seems everywhere you turn is something creepy and spooky. Bats are a common symbol of Halloween, so it seemed appropriate to cover them in the Animal Hearing Series.
Most people have heard of bats' ability ofecholocation. It's a natural type of sonar. Bats use it to navigate, hunt and find spots to roost. To perform echolocation, a bat makes a loud sound, and then measures the time it takes for the sound to bounce back to determine how far away things are. They can also tell what they're near to by the sound quality of the echo they hear.
<span>Because they use echolocation to get around and can't use their eyesight much while hunting, you'd think bats would need to have very good hearing. And they certainly do. They can hear between 20 to 120,000 Hz. They are very sensitive to high-frequency sounds, way beyond what humans can hear. Even the shape of bats' ears contribute to being able to hear better. </span>
Answer:Vitamin D3 is cholecalciferol and comes from animal-based sources. Both supplements are processed in the body by the liver to 25-hydroxyvitamin D, though vitamin D3 is thought to provide higher levels of 25D.
