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.
1st Jul 2011 21:45:02. GâDay Guys: Seals have a number of adaptations that allow them to âhold their breathâ for extended periods underwater. For example, a high proportion of oxygen is stored in their blood (and not the lungs) - their blood has more haemoglobin than ours. They channel blood to critical organs such as the flippers, heart and brain during a dive.