What are the three uses for geography???

Geography is useful because it will help you know more about the world around you. The more knowledge you have, the more experiences you can have in life.
Without geography people wouldn't know...
1.  How to get from one place to another
2.  Where other countries were
3. How far away a place was and more.

The answer is a but it also might be 7 so

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.