Fact 1: Neurons are the structural and functional units of the nervous system.

Fact 2: Excitotoxicity kills some neurons.

Given the two facts above, answer the question "excitotoxicity can do what to the structural units of the nervous system?" with the following options: 
- harm
 - loss
 - duplicate
 - kill
 - mutate
 - death
 - function
 - damage


 

    kill     