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.
Actress | Producer | Soundtrack. Patricia Rooney Mara was born in 1985 in Bedford, New York. She is one of four children of Kathleen McNulty (nee NÃ©e) rooney AND nfl football Team New York giants Executive Timothy Christopher. mara