Complete the statements to explain the impact of the agricultural revolution. New
improved farming methods, which led to
food supplies. The population size
.

As food
were created, more people could do other jobs. This is called the
of labor.

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.