I don't know the reasons someone please help

Answerair masses develop near the equator are warm; tropical air mass

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.

Ibelieve it was because of the gas act in order to preserve fuel