Find the area of the cross section times by height
Pacific ocean. aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
I would say : landslides, tsunamis, and liquefaction.
In the age of exploration.... Prince Henry showed the Portuguese how to navigate by studying the sun and stars until later on, he showed them the compass navigation as the only technology advance which made possible for them.
The primary case of Nigeria's water pollution would be oil spills.
