In the middle east, one of the main reasons people are moving to cities is to find
a fertile land
b. jobs
c. oil
d. schools

B. Jobs. Because big cities allow for more opportunities and have a bigger job market and where there is more people, more stuff needs done.

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.