1-illegal
2-legal
3-legal
4-legal
5-legal
6-illegal
7-illegal
8-illegal
9-legal
10-illegal
11-illegal
12-legal
It can be, acne can vary from person to person, some people get mild acne, while others get worse. Some people can get scars from acne, if that is the case, then yes.
I would say D. Blaming others, because the other responses Are important characteristics of good mental and emotional health and D is the only one that isn't.
skeletal system and the muscular system,
Muscles are attached to the skeleton and work assuming that the skeleton is there; for example, there is no muscle that makes sure you don't bend the middle of your arm, as it's stable because there is a bone in it. Basically, the skeleton is a scaffolding for the muscles.
the skeletal system and the nervous system,
Many nerves run along the skeleton, or even inside the bones, and the bones protect the nerves; for example in the spinal cord
the muscular system and the nervous system.
The Nervous system controls the muscles; it sends the muscles commands
