The term "flood-frequency curve", though in common use, may be misleading in that it implies that floods of certain sizes recur at regular intervals.
Answer the following statement true (T) or false (F)
True
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Evidence for free oxygen in the atmosphere comes from ____
a. zircon crystals b. sandstone-carbonate-shale assemblage c. multicelled organisms d. continental red beds e. tillites
How did recent eruptions of Mount Pinatubo in the Philippines and Kilauea in Hawaii differ? What will be an ideal response?
Under U.S. immigration policies
A) refugees receive special priority over economic migrants. B) economic migrants are expedited across borders to ensure their skills contribute quickly to the economy. C) refugees and economic migrants are treated the same. D) economic migrants are allowed only if they don't send remittances. E) economic migrants are allowed only if they can prove there were no jobs available in their country of origin.
The type of stress that causes most folding is
A. compression. B. tension. C. confining pressure. D. fluid pressure.