The polar bears are going to fight for the different resources that will become limited in their environment
<span>Recruitment of motor units.
Altering frequency of the stimulation.</span>
Support, Protection, Movement, Blood cell production, and Calcium.
The fibers contract to produce tension on the associated tissues or tendons. Muscle tissue<span> is enclosed in facia, which in turn is attached to other structures including ligament. There are three types of </span>muscle tissues<span> : </span>skeletal<span>, cardiac and smooth muscles.</span>