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.
7. Puffer Fish (Wikimedia). This is one of the most deadly animals inhabiting the ocean. They are deceptively cute, but quite dangerous. When threatened, they puff out their protruding spines. The venom from their spines can paralyze you, causing you to stop breathing, resulting in death.