cliparts/9/d/6/8/clipart-ozone-layer-9d68.svg image/svg+xml Open Clip Art Library Ozone layer 2006-10-12T18:53:09 an image from the US government EPA "Sunwise" program. I converted it from PDF format. the source link is here - http://www.epa.gov/sunwise/doc/poster.pdf http://openclipart.org/detail/549/ozone-layer-by-ryanlerch-549 ryanlerch cartoon clip art clipart coloring book earth epa epa sunwise global globe line art outline ozone ozone layer science summer sun warming world