Water-filled coastal valleys that were excavated by glaciers are termed . A. fjords B. deltas C. fords D. tombolos

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.

There are no put the options so we can assist you ! put it on then i'll answer it ! did you not put the options on intentionally by any chance?

Ido believe it is b 

The answer is a for sure