Disciplinary Core Ideas (DCIs): Living versus Nonliving, Characteristics of Life, Biosphere 1 & 2 - Biosphere, Biome, Ecosystem, Community, Species/Population, Individual/Multicellular/Single-Celled/Whole Organism, Organ Systems, Organs, Tissues, Cells, Molecules, Atoms, Microscopes, Investigations of Systems within Microscopic Organisms (Cells), Cellular Structures, Functions, and Processes, Organization of Life, Tissues, Organs, Organ Systems, & Whole Organism, Human Body Systems - Interactions of Body Systems, Nervous System (Body's Response to Stimuli), Genetics, Heredity, Inheritance & Variation of Traits