The mammary gland of the dairy cow is composed of millions of milk-producing alveoli, which convert blood components into protein, fat, and lactose.The gland is attached to the body by the median and lateral suspensory ligaments. Milk exits each mammary gland via a teat equipped with a teat canal.he mammary gland of the dairy cow is composed of millions of milk-producing alveoli, which convert blood components into protein, fat, and lactose.
Echolocation is the use of sound waves and echoes to determine where objects are in space. Bats use echolocation to navigate and find food in the dark. To echolocate, bats send out sound waves from their mouth or nose. When the sound waves hit an object they produce echoes. The echo bounces off the object and returns to the bats ears. Bats listen to the echoes to figure out where the object is, how big it is, and its shape. Using echolocation, bats can detect objects as thin as a human hair in complete darkness. Echolocation allows bats to find insects the size of mosquitoes, which many bats like to eat.
Bats use this to avoid flying into objects. The faster clicking is likely because the bat has detected an insect and the bat needs more accuracy to catch its prey. You can use the player below to listen to the call or get the mp3 file here.