People older than 55 are encouraged to include balance training in their exercise program to reduce the risk of

In the mid 1800s western settlers and american indians differed in their views about

If you rub a balloon on a piece of fabric or carpeting and then hold it against your head, your hair can stand on end. use what you have learned in this lesson to explain why this happens.

What would you call a political system that is only meant to last for a short time