Coastal erosion is caused by (choose all that apply) Storm surge
Sea level rise
Development along coastal areas
Ice ages causing sea level to fall

The answer is a but it also might be 7 so

Answer primary waves;

Answera discharge of static electricity;

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.