What determines an organism's response to a particular pollutant?
a. The quantity of the pollutant
b. The toxicity of the pollutant
c. The persistence of the pollutant
d. All of these choices
ANS: D
An organism's sensitivity is based in all three factors. The reaction to a pollutant can vary with every
species. Information can be found in the section Marine Pollutants May Be Natural or Human
Generated.
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Most of Earth's freshwater is located in
A. polar ice caps and glaciers. B. rivers, lakes, and streams. C. groundwater. D. the atmosphere.
America's global cultural dominance has been forced on the world
Indicate whether the statement is true or false.
Evaluate which energy source will be most promising for the United States and Canada's future
What will be an ideal response?
Caves most commonly form in ________.
What will be an ideal response?