How are resources related to geologic structures?
What will be an ideal response?
Answer: "Gas is less dense than oil, and oil is less dense than water. As a result of this density contrast, oil and natural gas migrate upward through pores toward Earth's surface unless impeded by low-porosity layers, which trap the oil and gas. Anticlines and faults form common traps for oil and natural gas. The oil and gas migrate upward to the highest point below a nonporous layer along the hinge line of an anticline and are trapped beneath reverse and thrust faults where low-porosity layers are displaced on top of high-porosity layers. Metal-rich mineral resources commonly form along joints and faults where warm fluids with high concentrations of metal ions readily flow and cool to precipitate metallic minerals."
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Indicate whether the statement is true or false
Approximately ________ million years ago, glaciers were widespread in Antarctica as the cold waters of the Southern Ocean efficiently flowed around and isolated the continent.
A. 34 B. 14 C. 10 D. 47
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a. ?depend on the eruption products and the population density near the volcano b. ?have been decreased greatly by improvements in volcano prediction c. ?were greater in prehistoric times than modern times d. ?are greatest in developing countries and relatively minimal in developed countries e. ?are effectively mitigated by barriers and other constructions
Which of the following are problems of inner cities?
A) crisis housing B) inadequate funding of inner-city schools C) Health care in the inner city is poor. D) Crime rates in inner city areas are higher. E) all of the above