Leukocytes in urine are not a dangerous condition, but they are a sign that you are suffering from an infection or damage. Leukocytes are white blood cells (WBC) that work with the immune system to defend against infectious disease. Damage to the kidneys, ureters, urethra or bladder can cause leukocytes to appear.
Empty vessels is a metaphor for a very shallow person whose thoughts and actions have no significant meaning. Such people are constantly talking or otherwise making noise in an attempt to get attention from other people. The more the person is ignored because he has no real input to give, the louder he will become.
Quick Answer. Sharks do not have specialized organs for producing sound, so any noise a shark makes is an unintended product of its daily life, such as when it swims or eats. The draughtsboard shark can inflate itself and produces a barking sound when it fills with air instead of water. Continue Reading.