Upwelling ________
A) is the flow of warm water upward toward the ocean surface
B) transports oxygen from deep to surface waters
C) occurs in areas where there are no currents
D) brings benthic nutrients to the ocean surface promoting high primary productivity
E) occurs when winds blow at right angles to a coastline
D
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Some rivers in China are so toxic that they should not even be touched.
Answer the following statement true (T) or false (F)
Which of the following is least affected by convection heating?
A) a volcano erupting B) Earth's mantle C) wind D) rain
In many freshwater toxicology studies, investigators rely upon knowledge of biomagnification to guide their investigations
If the researchers were looking for evidence of mercury contamination from a nearby power plant, they would most likely find the highest levels in the blood of A) herbivorous ducks living near the power plant. B) rabbits that live near the power plant. C) tadpoles in water near the power plant. D) snapping turtles in water near the power plant.
Cold water rising from deep in the ocean to replace warmer water at the surface is called ________
Fill in the blank(s) with correct word