Answer: Help move and use the legs properly
Explanation:
As these muscles contract and relax, they move skeletal bones to create movement of the body.
If they are experienced, it's good to talk to them because they can provide information and suggestions for you. <span />
Physics is a field of study which contributes ideas and concepts to biomechanics.
Answer:
A) The discovery of HIV. They believe that the chimpanzee version of the immunodeficiency virus (called simian immunodeficiency virus, or SIV) most likely was transmitted to humans and mutated into HIV when humans hunted these chimpanzees for meat and came into contact with their infected blood.