Mesopotamia was located in the a. nile delta b. indus valley c. fertile crescent d. arabian peninsula

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 is the approximate chemical composition of the solar nebula?

Which would be most likely to contain a good aquifer—igneous rock, sedimentary rock, or metamorphic rock? explain what qualities of this rock type make it a good aquifer. 500 word minimum response