However, people who live at high altitudes can have up to two extra quarts of blood, which helps the circulatory system to provide more oxygen to the body cells.
(two extra quarts of blood; helps; the circulatory system to provide more oxygen to the body cells) (the circulatory system; to provide; more oxygen; to the body cells) (people who live at high altitudes; can have; up to two extra quarts of blood) Context(people who live at high altitudes can have,List([9, 51))):(people; live; L:at high altitudes)
people who live at high altitudes can have,List([9, 51))
two extra quarts of blood the circulatory system people who live at high altitudes people
helps to provide can have live
the circulatory system to provide more oxygen to the body cells
more oxygen to the body cells
up to two extra quarts of blood
L:at high altitudes