Scrubs were originally the surgical "scrub" clothing worn by physicians during surgery. The wearing of scrubs has since become commonplace in hospitals by many types of workers who like them for their practicality and comfort.
... 3,014 m. Major rivers include the Amazon, the largest river in the world by volume, the Parana[?] with its impressive Iguaçu[?] falls, the Rio Negro, São Francisco[?], ...