You should learn oceanology and also geography,biology.
Answer:
important to the economy of Ethiopia as a diversification from agriculture. Currently, mining comprises only 1% of GDP. Gold, gemstones (diamonds and sapphires), and industrial minerals are important commodities for the country's export-oriented growth strategy. Tantalum mining has also been profitable
One is B, two is C, and I'm not sure but I think three is A or C.
I beleive its the Amazon.
