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.
How tall Demi Lovato is a question asked frequently by most of her fans and critics. Her height is estimated at 5â2â but there has been an ongoing heated debate among her fans on the starâs real height minus her heels.