In addition to the sewer mains, what other parts of Tucson’s infrastructure
do you think are aff ected by ground subsidence? What will be an ideal response?
Answers will vary. Roads will crack and need to be replaced. Utility lines (gas lines, water
lines, etc.) will also subside with the land surface and will probably crack as well.
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What is meant by the expression “downbuilding”?
What will be an ideal response?
How do day length and the Sun's altitude vary throughout the year for the area in which you live?
What will be an ideal response?
Visualize five horizontal sedimentary strata exposed in a cliff or canyon wall identified by consecutive numbers, 1 being the lowest bed and 5 being the highest. Which of the following statements concerning the strata is true?
A) Bed 4 is older than bed 2. B) Bed 3 is older than beds 2 and 4. C) Bed 5 is the oldest. D) Beds l and 3 are older than bed 4.
Circulation in which of the following oceans is particularly sensitive to changes in its deep-water circulation pattern that dramatically and abruptly affect climate?
A) The North Atlantic Ocean B) The North Pacific Ocean C) The South Atlantic Ocean D) The South Pacific Ocean E) The Southern Ocean