Plz help for 10 points

water bottles are fun

Answerdistinguish between the mercalli scale and the richter scale;

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 answer is d. none  hope this .

Answer (b) they're often rural migrants with no title to housing or rights to established businesses