Tectonic plates being pushed together causes earthquakes, and several tectonic plates make up the earth's crust that are in a constant state of process. Given these facts, parts of the Earth's crust being pushed together causes what among the following options:
- magnetic shifts
 - erosion
 - friction
 - earthquakes
 - solar flares
 - moonquakes
 - global warming
 - Sediment


 

    earthquakes     