Answer:
Ocean-Ocean Divergent
Continent-Continent Transform
Continent-Continent Convergent
Continent-Ocean Convergent
Ocean-Ocean Transform
Continent-Ocean Convergent
Continent-Continent Divergent
Explanation:
The above all sites are possible to generate earthquake . The divergent boundary whether it is Continent-Continent or Ocean-Ocean can generate shallow earthquake although it's very weak . The transform plate boundary or strike slip plate motion also generate shallow but powerful earthquake ( example: San Andres Fault is a transform plate boundary) . Another one is convergent boundary which can generate deep and very powerful earthquake .
1. A- the economy faced serious challenges
2. B- Modernized
Divergent boundaries move oceanic plates (plates found in the ocean) away from each other, making magma seep in to fill those cracks, thus spreading the sea floor.