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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.

Stages 1 and 4 of the demographic transition are similar in that

Which domain endings indicate websites that are most likely to be reliable sources? check all that apply. sites ending in .net