1. Explain why the ocean is studied as the World Ocean.
2. Compare and contrast the five (5) main ocean basins of the World Ocean.
3. Describe how differences in density of Basaltic rock (found in oceanic crust) and Granitic rock (found in continental crust) helped form the World Ocean basins.
4. Describe the formation of an oceanic trench and island arc.
for each question, only needs around 50 words to answer.Not essay.