Choose the one most appropriate answer for each.
-Alpine tundra

A)"Swamp forest"; northern coniferous forest
B)Undersea formations that are similar to islands in species diversity and abundance
C)Broad belts of grasslands with a few scattered shrubs and trees; found in Africa, India, and Australia
D)Extends around the shore of a lake to a depth where rooted aquatic plants stop growing
E)Includes sediments and rocks on the ocean bottom
F)Most structurally complex and species-rich biome; features nutrient-poor soil
G)Chemoautotrophs are the primary producers
H)Occurs at high altitudes throughout the world, rocky and nutrient-poor
I)Coastal nurseries for marine animals supplied with nutrients by an influx of freshwater
J)Vast expanses of land dominated by distinct kinds of plants that support characteristic communities