Why does long term abuse of amphetamines and cocaine cause ...

[stock]

Why does long term abuse of amphetamines and cocaine cause nervous system damage?
 
  A) The ability to make neurotransmitters declines.
  B) The neurons fire too much and become damaged.
  C) The synaptic cleft becomes blocked with neurotransmitters.
  D) The nerve cell dies.
  E) none of the above

Question 2

The number 0.0040600 has ________ trailing zeros.
 
  A) 0
  B) 1
  C) 2
  D) 6

[frre432]

Answer to Question 1

A

Answer to Question 2

C

[stock]

Thanks for the timely response, appreciate it

[Chelseyj.hasty]

Gracias!