sentences: the pea of tectonic advances are lost at the convergent migration & the sets of the standards kinds 1000 to unfold ->  the collision of the tectonic plates causes rocks to fold at the convergent boundaries  the collision of the tectonic plates causes rocks to fold at the convergent boundaries & a want domain is formed by overhead smoking upon zero another ->  mountains will form at the convergent boundaries by the collision of the tectonic plates  mountains will form at the convergent boundaries by the collision of the tectonic plates & the covers valley are a mean of want -> the appalanchian mountains are formed at the convergent boundaries by the collision of the tectonice plates