What organism is used to treat municipal wastewater?
A. Freshwater fish
B. Green algae
C. Red algae
D. Aerobic bacteria
Answer: D
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Which model of the internal social structure of the city explains that growth develops in a series of sectors?
A) the concentric model B) the sector model C) the multiple nuclei model D) the adaptive concentric model E) the successive hierarchy model
Primary productivity in nontropical terrestrial environments is typically limited by what nutrient?
A) K B) N C) Fe D) P
Determine the gradients of three segments of the Eds Creek drainage basin: a first-order stream between Points 1 and 2; a second-order stream between Points 2 and 3; and a thirdorder stream (Eds Creek) between Points 3 and 4. Use the ruler function to determine distances (to the nearest 0.01 miles) and the elevation change between points.
To answer the following questions, go to the Hess Physical Geography Laboratory Manual, 12th edition, website at www.MasteringGeography.com, then Exercise 39 and select “Exercise 39 Part IV Google Earth™” to open a KMZ file in Google Earth, or scan the QR (Quick Response) code for this exercise and view “Exercise 39 Part IV Google EarthTM video.” In this exercise you’ll compare the characteristics of streams in the Eds Creek drainage basin in Montana (also shown in Map T-3 and Figure 39-3).
(a) Fly to Point 2, then determine the gradient of the first-order stream (between Point 1 and Point 2).
(b) Fly to Point 3, then determine the gradient of the second-order stream (between Point 2 and Point 3).
(c) Fly to Point 4, then determine the gradient of the third-order stream (between Point 3 and Point 4).
How do evaporation fogs differ from other types of fog?
A) They are created when water vapor is added to the air. B) They are created when the air is cooled down to the saturation point. C) They are created through adiabatic cooling. D) They only occur when the air is stationary over a surface with a similar temperature.