churn in Business English. churnnoun [ U ] Preventing customer churn is a major concern for mobile service providers, since 20-40% of customers leave their providers in a given year. Employee churn for new hires increased by 33% for the third straight year.
For 18 months, the baby nurses while its mother is on land, or it swims underwater to suckle. When it dives, the calf closes its nose and ears to block out water. All hippos have this ability. They also have membranes that cover and protect their eyes while they are underwater.
Most shallow and semi-deep fishes have enclosed sacs, called gas bladders or swim bladders, for buoyancy control. If you rapidly reel in a fish from 100 or 200 feet deep, the bladder will expand and may even be partially forced out of the mouth.But deep-sea fishes lack an air bladderâit wouldnât do them any good because, at depth, the air would be squeezed out by water pressureâand would suffer no pressure-related problems.f you rapidly reel in a fish from 100 or 200 feet deep, the bladder will expand and may even be partially forced out of the mouth. But deep-sea fishes lack an air bladderâit wouldnât do them any good because, at depth, the air would be squeezed out by water pressureâand would suffer no pressure-related problems.