1.In flat areas, water is pumped out of the ground.

Question

Identify prepositional phrase then tell is adjective or adverb phrase

1.in flat areas-adverb
of the ground-adverb

Answer 1

1 - OK

2 - "out of the ground" - adverb

Answer 2

http://en.wikipedia.org/wiki/List_of_English_prepositions
Check the list of Multiple Words.

http://grammar.ccc.commnet.edu/grammar/prepositions.htm