Which of the following is an example of a primary producer?
A) phytoplankton
B) crabs
C) fish
D) seals
A
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Wetlands are important for the infiltration of water into aquifers.
Answer the following statement true (T) or false (F)
In lakes, large numbers of decomposers are found in the ____.
A. limnetic zone B. benthic zone C. littoral zone D. profundal zone E. abyssal zone
Which of the following is not a significant factor in determining whether precipitation will soak into the ground or run off on the surfaces?
A) steepness of the slope B) amount and duration of precipitation C) vegetation D) lithology E) saturation level
Physical weathering is greatest under conditions of
A) lower temperatures and higher precipitation. B) higher temperatures and precipitation. C) a lack of moisture at the surface. D) temperatures that reach below freezing.