Help, Please... If Oceanic crust collides with continental crust, what will most likely happen?

Iceland has taken advantage of its geology to meet a. political needs b. energy needs c. cultural needs d. economic needs answer b. energy needs

Put these ecosystems in order of least biodiversity to most biodiversity 1. mediterranean forest 2. indonesian rain forest 3. arctic ocean

With these question would be nice i needs them in a hurry which nation leads eastern europe in nuclear energy usage? a ukraine b lithuania c slovakia d solvenia which eastern european nation is popular with skiers? a czech republic b estonia c bulgaria d none are