50+ KEY PICTURES Students Navigate through a a plethora of clues given on a data table . . . and . . . internet sites . . . to determine and unlock the most important contributions made to BIOLOGY by key scientists and organic chemists . . . whose impact and discoveries changed our world. SIMPLIFIED so that students can make a timeline TAPE out of regular copy paper. NO COMPUTER NEEDED . . . INCLUDES PICTURES of ALL SCIENTISTS . . . and background information, of each scientist.