metamorphoses is a machines of light matter
metatarsus is not skeletal_structure. heterometabolism is metamorphosis. metatarsus is skeletal_structure. metacarpus is skeletal_structure. metamathematics is pure_mathematics. metatarsus is not bone_structure. metatarsus is bone. metatarsus is bone_structure. metacarpus is not skeletal_structure. metacarpus is bone_structure.