Organization of Petrochemical Exporting Countries
The solid, semi-solid, and liquid land of the lithosphere form layers that are physically and chemically different.
Major volcanic events that have occurred within the Ring of Fire since 1800 included the eruptions of Mount Tambora (1815), Krakatoa (1883), Novarupta (1912), Mount Saint Helens (1980), Mount Ruiz (1985), and Mount Pinatubo (1991).
C. Noth Korea. This country is still a Communist and have a lot of problems in the country.
