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.
Standing next to her 5ft 5 mum Beyonce, Blue already looks tall for her age and appears she may take after her rapper father in the height stakes. Blue held onto her Flawless mother's hand as they jumped onto the boat to make their way back to the luxury yacht.