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:
C
Explanation:
In order to get to know someone, we need to understand how they think.
Answer:
curling weights and doing push ups
By having parks, community gyms, trail ways, easy access to sport clothes and training supplies, school teams and affordable sports teams