Who was both a woman and a man at different times?

hermes
tiresias
charybdis
tityus

Tiresias, he was born a man, but one of the things he was known for was being able to change from man to woman back to man in an endless cycle.

Magma forms by partial melting of upper mantle and crust. partial melt means that only a fraction of the available material forms a melt, and that the remainder stays solid. the partial melt rises because of its lower density and ascends through he crust. this is so conclusive mean the answer would be magma igneous rocks or balistic magma.