Bill nye bones and muscles

Explain why you would or would not have a lasik surgery if you wore contacts or glasses. describe how public opinions related to this surgery have changed over the years. in your own words, explain this surgery as though you are explaining it to someone who has no knowledge of the procedure.

Are needed by the body in large amounts in order to maintain good health

Exercise equipment compensates for acting irresponsibly are disregarding the rules of physical activity