the skeletal survival is used to provide cacti / size / thwart for people
survival is biological_goal. metatarsus is skeletal_structure. thimble is container. movability is mobility. thwarting_threat_goal is preventation. bioweapon is weapon_of_mass_destruction. fructification is reproductive_structure. bone_resorption is biological_destruction. thwart is crosspiece. wheelchair is mobility_aid.