churn noun (CUSTOMERS) âº [ S or U ] specialized also churn rate business the number of customers who decide to stop using a service offered by one company and to use another company, usually because it offers a better service or price: Internet and cable television companies suffer from a high churn rate.
Rhinos and horses both belong to the order Perissodactyla, the odd-toed ungulates (hoofed mammals), whilst hippos and pigs belong to the order Artiodactyla, the even-toed ungulates. Source(s): I used to be a zookeeper and have studied animals all my life.
Hippos likely evolved from a group of anthracotheres about 15 million years ago, the first whales evolved over 50 million years ago, and the ancestor of both these groups was terrestrial. These first whales, such as Pakicetus, were typical land animals. They had long skulls and large carnivorous teeth.