Thickening and discoloration of the nail of the index finger

Gregory was caught smoking marijuana on his school’s campus during lunch. this is not the first time gregory has violated the school’s drug-free policy. his principal has decided to expel him, and he may face fines and time in a juvenile detention facility. gregory faced consequences when he was sent to juvenile detention after repeatedly violating the school’s drug-free policy.

What is a common risk associated with illegal drugs?

Which two levels of the spine that can undergo flexion and extension?