TASK DEFINITION: Given a text passage, come up with an appropriate title for it. The title should accurately represent what the main focus of the passage is. The title of a passage may be present in the first few sentences of the passage and/or be referred to multiple times in the passage. The title should be 1-5 words long.
PROBLEM: Blood urea nitrogen ( BUN ) is a medical test that measures the amount of urea nitrogen found in blood . The liver produces urea in the urea cycle as a waste product of the digestion of protein . Normal human adult blood should contain between 6 and 20 mg of urea nitrogen per 100 ml ( 6 -- 20 mg / dL ) of blood . Individual laboratories will have different reference ranges as the assay used will vary between laboratories .

SOLUTION: Blood urea nitrogen

PROBLEM: Mescalero or Mescalero Apache is an Apache tribe of Southern Athabaskan Native Americans . The tribe is federally recognized as the Mescalero Apache Tribe of the Mescalero Apache Reservation , located in south central New Mexico .

SOLUTION: Mescalero

PROBLEM: The iPod Shuffle ( stylized and marketed as iPod shuffle ) is a digital audio player designed and marketed by Apple Inc . It was the smallest model in Apple 's iPod family , and was the first iPod to use flash memory . The first model was announced at the Macworld Conference & Expo on January 11 , 2005 ; the fourth - and final - generation models were introduced on September 1 , 2010 . The iPod Shuffle was discontinued by Apple on July 27 , 2017 .

SOLUTION:
iPod Shuffle