He worldwide use of cleaner energy sources could lead to which of the following results? a: rise in ocean levels. b: reduction in acid rain. c: increased desertification in the sahel. d: decreased desertification plants in the middle east

What did president roosevelt do to aid panama in becoming an independent country? a. he negotiated a peace treaty with nicaragua to purchase the land. b. he invaded colombia to establish a us base for defense. c. he placed warships around panama to block sea lanes. d. he used dollar diplomacy to block imports to nicaragua.