Answer:
I'm pretty sure its Skeletal System
Explanation:
The socioeconomic impact of NCDs
Vulnerable and socially disadvantaged people get sicker and die sooner than people of higher social positions, especially because they are at greater risk of being exposed to harmful products, such as tobacco, or unhealthy dietary practices, and have limited access to health services.
It depends on how the skin went away if you where biting your lips it can take up to 2-3 weeks