By contracting, muscles pull on bones and allow the body to move. Muscles can only contract. They cannot actively extend, though they can move or relax back into the non-contracted neutral position. Therefore, to move bones in opposite directions, pairs of muscles must work in opposition
Answer:
im not completely sure but if a person is eating unhealthy food and doesnt care for their body thats the person who engages in habits most harmful to his/her body.
Explanation:
The arteries carry oxygenated blood away from heart and then re-takes it back to your system
I believe the answer is C
