What is the average salt content of seawater as measured in parts per thousand (ppt)?
a. 350 ppt
b. 3.5 ppt
c.35 ppt
d. 35 ppt

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.

What are canada’s major boundaries?

When the soviets created the borders of their central asian and caucus republics, the paid little attention to where each region’s ethic group lived. ethnic-related disputes exist along every sherd boundary in central asia. true false