The second The second leading cause of death among people aged 15 to 24 is

Sui cides have become the second-leading cause of death among teenagers in the United States, surpassing homicide deaths, which dropped to third on the list.

Explanation:

Homicide

i hope it helped  

tell their parents and make sure she gets from a counselor or therapist. be supportive and be there for her. be a kind and good friend. spend time with her to make her feel like she's not alone. i'm not a professional but i really hope they stays strong.

teens need 8-10 hours of sleep. it kind of depends on what time you get up. but prob around 10 or 11 p.m. or 11 or 11: 30 p.m.