Volcanic island arcs are characteristic of which type of convergent plate boundaries?
a. continental-continental
b. continental-oceanic
c. oceanic-oceanic
d. continental-oceanic AND oceanic-oceanic
e. continental-continental; continental-oceanic AND oceanic-oceanic
C
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Lakes or areas of the ocean that have a small supply of nutrients, and thus low productivity, are referred to as
A. autotrophic. B. eutrophic. C. oligotrophic. D. mesotrophic. E. abyssal.
Through your binoculars you observe a pack of wolves stalking a caribou separated from its herd. Geese take to the air, departing the boggy scene. You are most likely in
a. Desert b. topical grassland c. temperate grassland d. Arctic tundra e. Savanna
Whereas mountains occur on every continent, depressions (basins) only occur in Asia and Africa
Indicate whether the statement is true or false
The first bacteria probably used ________ instead of water as a source of hydrogen
A) Fe3O4.OH B) H2SO4 C) H2S D) OH-1 E) HCl