Lava at earth’s surface or below earth’s surface cools and hardens to form mineral crystals.

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.

Explain the value of statistics and other data to positive economics and to normative economics

Which of these fragmental sedimentary rocks would most likely form farthest from the land?