Which of the following is the Principle of uniformitarianism?
a) all rocks were originally deposited horizontally
b) all the rocks were depoisted with the youngest on the bottom
c) the present is the key to the past
d) all the rocks were deposited with the oldest on the bottom
Ans: c) the present is the key to the past
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Other than the levees, does there appear to be any land more than 25 feet higher than the river between Alsatia (west of the Mississippi River along Highway 65) and the Mississippi River itself?
The question is based on Map T-5, a portion of the “Jackson, Mississippi-Louisiana” topographic map (scale 1:250,000; contour interval 50 feet; dashed lines are supplementary contours at 25-foot intervals). A color satellite image of this same region is shown in Figure 40-5 (scan the QR code for this exercise or go to the Lab Manual website and Exercise 40). For reference, the dashed contour line on “Paw Paw Island” in the southern part of the map shows an elevation of 75 feet. What will be an ideal response?
Which type of organism is responsible for harmful algal blooms, or HABs?
A) diatoms B) dinoflagellates C) coccolithophores D) foraminifera
Climate models predict that, as the world continues to warm, sea-surface temperatures in the tropics will rise. This may in turn ____
A) increase global circulation B) increase the amount of time between hurricane formations C) increase the strength of hurricanes D) decrease the strength of hurricanes
How does road construction associated with timber harvesting contribute to landslide hazards?
A) The roads add weight to the hillslope. B) The roads loosen the soil, making shallow soil slips more likely. C) Road construction removes large numbers of trees. D) The roads alter the movement of surface water and groundwater.