Everyone knows what a plant or animal is, but sometimes, what we might call a plant is actually a protist. Or is it a fungus? The six major groups of organisms on Earth are an essential part of life science curricula. Written especially for struggling readers or those in need of review, each book in this set focuses on one group, including its main physical characteristics, ways of making or consuming food, and examples of different kinds within its major grouping. Features include: Expanded glossaries allow readers access to quick explanations of important vocabulary. Fact boxes provide readers more context within the science curriculum or provide further explanation of the main texts. Graphic organizers emphasize important concepts.