Vocabulary
organism, function, structure, energy, vertebrate, invertebrate, backbone, internal, external, skeletal system, heart, brain, lungs, nutrient, carbon dioxide, oxygen, skin, stomach, mammals, fish, reptiles, amphibians, birds, exoskeleton, species, predator, prey, senses, herbivore, carnivore, omnivore, scavenger, animal, structure, function, mate, reproduce, alpha, structure, growth, plants, animals, organism, growth, reproduction, stem, leaf, roots, minerals, soil, sprout, fertilizer, nutrients, seed, sprout, energy, Structure, function, organism, behavior, environment, internal, external, function, mammal, survival, respiratory system, carbon dioxide, oxygen, lungs, gills, extract, circulatory system, cells, muscular system, skeleton, nervous system, muscle, vertebrate, invertebrate, mollusk, insect, digestive system, reproduce, mate, ovaries, fertilize, external, structure, function, adapt, environment, predator, prey