Fresh water and salt water together cover 3/4 of the earth's surface.
I am the Panama Canal. The Panama Canal is forty-eight miles long and is a key route for international maritime trade and a part of the canal, specifically the locks, are in construction and should be opened in 2016. Both the French and the Americans have worked on the Panama Canal.
Not sure if you still need it but the answer is (c) new cities were built along the shores of the Great Lakes.
Answer:
The musky population always increase over time by 8
