How do the processes of weathering and erosion differ? a. Weathering involves the movement of rock, while erosion involves the movement of land.
c. Weathering involves the breakdown of rock, while erosion involves the movement of rock.
d. Weathering involves the movement of rock, while erosion involves the breakdown of rock and land.

Distance that the transcontinental railroad covered from omaha to san francisco.

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.

The hebrews originally migrated from a. india b. egypt c. arabia d. mesopotamia