Question

by whom define the brain​

Answer 1

Answer:

???what is the question dude

Answer 2

Explanation:

Brain, the mass of nerve tissue in the anterior end of an organism. ... The brain integrates sensory information and directs motor responses; in higher vertebrates it is also the centre of learning. The human brain weighs approximately 1.4 kg (3 pounds) and is made up of billions of cells called neurons.