Wich ocean was classified as an ocean most recently?

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.

Hurry on the map above, arrow 1 points to a region where most people are

The picture above depicts the berlin wall which divided in half from the 1960 to 1989 which type of boundary was the berlin wall