| A) | Absorption, Achromatic, Adaptation, Aerobic, Algae, Alimentary, Allergy, Amoeba, Amphibian, Analogue, Anatomy, Ancestor, Antibody, Appendage, Aquatic, Arboreal, Assimilation, Atrophy, Auditory |
| B) | Backbone, Bacteria, Balance, Barrier, Benign, Biology, Biome, Bisect, Botany, Branch, Breathe |
| C) | Carnivorous, Catalyst, Cavity, Cell, Chlorophyll, Cholesterol, Chromatic, Chromosome, Cilia, Classification, Cohesive, Collagen, Communicable, Community, Contraction, Control, Convolution, Coronary, Cyclic |
| D) | Darwin, Deciduous, Decomposition, Dermis, Develop, Dietary, Differentiation, Diffusion, Digestion, Dinosaur, Discipline, Displacement, Division, DNA, Dominant, Dormant |
| E) | Ecology, Ecosystem, Ectoplasm, Edema, Endangered, Endemic, Energy, Environment, Enzyme, Epidermis, Erosion, Essential, Estrogen, Evolution, Exoskeleton, Extermination, Extinct |
| F) | Factor, Feedback, Fertilization, Fibrillation, Filament, Fish, Fission, Flower, Food chain, Fossil, Function |
| G) | Gamete, Gaseous, Gastrin, Genetics, Genome, Genus, Germ, Gestation, Gills, Grafting, Greenhouse effect, Growth |
| H) | Habitat, Hemoglobin, Herbivore, Heredity, Hibernation, Hierarchy, Homogeneous, Hormone, Horticulture, Host, Human, Hybrid |
| I) | Immunity, Inclusion, Incubate, Ingestion, Inherited traits, Inoculate, Inquiry, Insoluble, Instinct, Insulate, Insulin, Interdependent, Invertebrate, Involuntary, Isolate, Isotope |
| L) | Latitude, Leaf, Life cycle, Linkage, Living, Luminescent, Lymph |
| M) | Malignant, Mammal, Marine, Meiosis, Membrane, Memory, Metabolism, Microbiology, Microscope, Migration, Mildew, Molt, Muscle, Mutation, Mutualism |
| N) | Natural, Nerve, Neuron, Nitrogen, Nonliving, Nucleus |
| O) | Omnivorous, Optic, Order, Organs, Osmosis, Ossification, Oviparous, Oxidation |
| P) | Paleontologist, Parasite, Parasympathetic, Pathogen, Permeable, Plankton, Plasma, Platelet, Pollen, Pollution, Portion, Predator, Preserve, Pressure, Producer, Protein, Protoplasm, Pulmonary, Pyramid |
| R) | Radial, Receptor, Recessive, Recycling, Reflex, Regeneration, Regulate, Replicate, Repress, Reptile, Residual, Resource, Respiration, Restriction, RH factor, Root |
| S) | Scope, Secrete, Seed, Sensor, Shelter, Skeleton, Skin, Solar, Spatial, Species, Specimen, Statistics, Stimulus, Stress, Structure, Symbiosis, Symmetry, Synapse, System |
| T) | Taste, Taxonomy, Tendril, Terrestrial, Tissue, Tolerance, Toxin, Transformation, Transpiration, Tundra, Turgid |
| V) | Vacuole, Variation, Ventilate, Viable, Virus, Vital, Vitamin, Viviparous, Volume, Voluntary |
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