Čo je eurozóna? Čo je európska únia?

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.

From where does the solar winds generate

Hurricanes a. usually form over land b. usually intensify over land c. gain strength from ocean heat d. usually form over the poles