1. Hanger is a newly coined term that describes the inexplicable irritation some of us experience when our stomachs are growling. The brain panics when it does not get enough glucose because it can't function correct. 2. so that it can function correctly 3. because they believe that hanger may also be in the genes passed on from our ancestors.

1.) Hanger is when you run out of glucose. The desperate brain also releases a chemical called neuropeptide. It sends a message to help increase food intake, the same chemical also regulates anger or aggression. 2.)It produces neuropeptide. 3.)Because if your ancestors are lazy and they get Hungary a lot then that can be a acquired trait.

1.because it thinks that it is a life thretning problem 2.it sends messages to the organs to let out horomoans to build back up it's gluclose 3.because of the way it is