In a paragraph of not more tan 10 lines . Briefly explain why volcanoes occur​

Which of the following is not a challenge to instituting sound global environmental policies? a. most changes are inexpensive and easy to implement. b. elected leaders who support unpopular environmental issues often are not re-elected. c. economic considerations outweigh environmental ones in many societies. d. there is no way to enforce international environmental agreements.

Which of the following countries was not an ally to the u.s.s.r. during the cold war? west germany poland romania cuba

Part a: in paragraph 2, you can infer from the phrase "..thegreat triumph in mathematics" that the lieutenant is: