the collision of tectonic plates are found at the convergent boundaries
earth has tectonic_plates perulactone is withanolide. doldrums is not intertropical_convergence_zone. tectonic_plate is not stone. perulactone is not withanolide. doldrums is intertropical_convergence_zone. intertropical_front is intertropical_convergence_zone. coordinate_bond is covalent_bond. tectonic_plate is stone.