In middle latitude (temperate) oceans, primary productivity is limited by ________ in the spring and by ________ in the fall
A) available sunlight; available sunlight
B) available sunlight; nutrient supply
C) nutrient supply; available sunlight
D) nutrient supply; nutrient supply
C
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Now the world's second largest economy, behind only the United States, China accounts for a third of total world economic growth, and GNI per capita has risen faster there than in any other country
Indicate whether the statement is true or false.
Manganese and phosphorite nodules can only be observed in areas of high sediment accumulation
Indicate whether the statement is true or false
Groundwater as a water source may be better than surface water because
A) groundwater may be naturally purified by percolation through soil. B) groundwater is a self-replenishing resource that cannot be exhausted. C) surface water is not naturally self-replenishing. D) groundwater is more easily located than surface water.
You are given the coordinates 128 E longitude, 45 N latitude. This is an example of a
A) mathematical location. B) placename on the grid system. C) situation on the grid system. D) mathematical grid interchange. E) site-situation intersection.