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.
This Disney and Pop Star stands at only 5â1â tall or 155cm. Ariana Grande was born June 26, 1993. She is an American Actress and singer. She become a star when she landed her role as Cat Valentine on the Nickelodeon sitcom Victorious, she is also in Sam and Cat and iCarly.