1 The brain makes up about 2 percent of a human's body weight. 2  The cerebrum makes up 85 percent of the brain's weight. 3  It contains about 86 billion nerve cells (neurons), the gray matter.
Rooney Mara's Height is 5ft 3in (160 cm). American Actress best known for her portrayal of Lisbeth Salander in the US remake of The Girl with the Dragon Tattoo.
Rihanna height is 172 centimeters or 5 feet 8 inches. She weighs around 126 pounds or 57kg. Rihanna celebrates her birthday on the 20th of February 1988.