Loading...
Preparing preview...
Ultraviolet radiation (UV) - >400 nm (sunburn); Infrared radiation - <760 nm (heat). UV radiation. Stimulates melanin (dark pigment) that absorbs UV protecting ...
This page is a search result, not an assignment you should present unchanged. Check the original source, rebuild the outline in your own words, and cite the author. PPT Finder does not host the PowerPoint file.