This may be a sebaceous cyst. This type of bump develops when sebaceous glands are blocked. Sebum builds up and a bump develops. This bump can feel hard to touch. Sebum is naturally produced, so there usually is not inflammation.
answer: Drug dependence occurs when you need one or more drugs to function. The American Psychiatric Association (APA) used to distinguish between dependence and abuse. Abuse was considered the mild or early phase of inappropriate drug use that led to dependence. People viewed dependence as a more severe problem than abuse.
The APA replaced “dependence” and “abuse” with “substance use disorder” in the 2013 edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5). This diagnosis focuses on the disorder involving the use of the substance.
Explanation:hope this helped u
Bad hygiene, puberty, physical activity or just normal teenage bodily changes.
I would say it's the answer with nitrogen oxides and volatile organic compounds
