Tropical rain forests are home to over half the world's species, all squeezed into a narrow strip of equatorial land?

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.

"the socialist system that had been in place had brought economic ruin to the country." i hope this !