Which letter in the diagram corresponds to an area that replenishes an aquifer by surface runoff and infiltration?

What is the function of Ramsar sites in Canada? 

A)  To protect areas of aesthetic value. 
B)  To protect biodiversity at high mountain sites. 
C)  To protect selected marine sanctuaries on the British Columbia coastline. 
D)  To protect wetlands and bird sanctuaries needed for waterfowl management.

Which biome is most likely to be found on the top of a very tall mountain in a tropical zone? 

A)  a temperate deciduous forest 
B)  a grassland 
C)  a desert 
D)  a tundra

Which of the following places would NOT be a good place to visit a reef?

A) shallow seas that are relatively free of suspended sediment
B) the area offshore of northeastern Australia
C) the Caribbean
D) islands in the southwestern Pacific Ocean
E) shallow, clear waters off Iceland

Which U.S.president tripled the amount of land in the National Wilderness System and doubled the area administered by the National ParkSystem? 

A)  Nixon 
B)  Kennedy 
C)  Carter 
D)  Reagan