Is sunbathing danerous? essay plan?

i need a against and for, for this question. including introduction and conclusion. the things in these topic i need to talk about are ultraviolet radiation,skin cancer,vitamin D,skin colour & ozone layer (every to do with sunbathing) i need to say how all these things make it dangerous to sunbath or how they are a positive effect for sunbathing, talk about exposure to sunlight to. AND REMEMBER INCLUDE SOURCES where you got the information eg. internet url, radio,newpaper page,gsce science book page number.