Biology
Evolution
Darwin, Evolution, & Natural Selection (Khan Academy)
Evolution (Encyclopedia Britannica)
Evolution News (Science Daily)
Evolution Resources (The National Academies of Sciences Engineering Medicine)
How Does Natural Selection Work? (American Museum of Natural History)
How Humans Are Shaping Our Own Evolution (National Geographic)
Natural Selection (Encyclopedia Britannica)
Natural Selection and Evolution (BBC Bitesize)
Heredity
Genetics (Encyclopedia Britannica)
Genetics (Genetics Society of America)
Genetics: The Study of Heredity (LiveScience)
Heredity (Encyclopedia Britannica)
Heredity (The Genetics Society)
Heredity and Cancer Basics (Johns Hopkins Medicine)
Six Things Everyone Should Know About Genetics (American Society of Human Genetics)
Understanding Genetics (Genetics Home Reference/U.S. National Library of Medicine)
Kingdoms
Animalia (Animals)
Animal (Encyclopedia Britannica)
Animalia - The Animals (Wildlife Journal Junior)
National Geographic: Bug Videos
Archaea
Archaea (Encyclopedia Britannica)
Characteristics of the Archaea (Encyclopedia Britannica)
Overview of Archaea, Protista, and Bacteria (Khan Academy)
Bacteria
Bacteria (Encyclopedia Britannica)
Fungi
Fungus (Encyclopedia Britannica)
Plantae (Plants)
Plant (Encyclopedia Britannica)