I need help writing 1 paragraph each for the 3 questions:

1) compare and contrast the definitions of exercise, physical activity, physical education, physical fitness, and sport.  How are they interrelated and does one supersede another?

2) how an individual who wants to maintain weight, lose weight, or gain weight needs to adjust his/her nutrition and exercise program. 

3)as a professional, do you believe it is important to be a role model?  Why or why not?  Do you have a professional role model?  What qualities does that individual exhibit?