1. Trenches
2. Mountain/Volcano formations as well as earthquakes
3. Earthquakes and tsunamis
4. It has made formations like the Marianas Trench, The Ring of Fire, and the Haiti earthquake
♥ False.
♥ (no)
♥ Not all males of sexual species have y chromosomes. <span />
Answer:
Temperature and pressure combine to keep the outer core in a liquid state. :)