What have been some of the causes of the increased amount of oil found in the ocean? What is the largest source of additional oil?
· Oil has always been naturally present in the ocean, but it has been on the rise.
· More than half of the world's oil is transported on the ocean each year. Since the increased transportation has occurred, there have been oil spills in the ocean. They are not always large enough to warrant the news, but this is not the main source of increased levels of oil found in the ocean.
· Some oil is released during the loading, discharging, and flushing of the tanker ships themselves. This accounts for 8% of the oil in the ocean.
· Most of the oil that gets added to the ocean each year comes from the runoff of city streets. This is perhaps the most dangerous addition of oil to the ocean. The oil has carcinogenic properties in this form.
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In the past, low-income people
A) lived in the center of European cities. B) were banned from living in the cities. C) were only allowed to live in the inner cities. D) lived in a segregated part of the suburbs along major routes. E) paid higher taxes for the right to live in the inner cities.
Currents out in the open ocean are primarily driven by which of the following?
A. tides and density differences of the water B. prevailing winds and density differences of the water C. shape of the shoreline and tides D. prevailing winds and tides E. shape of the shoreline and prevailing winds
High death tolls from earthquakes are generally due to
A) people living in areas with high risks for earthquakes. B) high population densities. C) substandard construction practices. D) All of these are correct.
Is such a soil likely to dry out quickly? Why?
Using Figure 27-1, the standard soil texture triangle, answer the question. What will be an ideal response?