What is the chief problem associated with the use of groundwater in southwest asia and north africa? a) groundwater is highly polluted by agricultural chemical runoff. b) groundwater is being depleted faster than it can be replaced, so it is inherently unsustainable. c) groundwater in this region is often contaminated with crude oil. d) drilling wells is very expensive.

b. africa to the americas

explanation:

lee and grant, both of whom held the highest rank in their respective armies, had known each other slightly during the mexican-american war (1846-48) and began their dialogue by exchanging awkward personal inquiries. characteristically, grant had arrived in his mud-splattered field uniform while lee had turned out in full dress attire, complete with sash and sword.

explanation:

c. businesses/firms & government