This figure illustrates the southward movement of a
A) continental tropical air mass.
B) continental polar air mass.
C) maritime tropical air mass.
D) maritime polar air mass.
Answer: B
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Manganese nodules ____
A) are a type of cosmogenous sediment B) are almost exclusively found on continental shelves C) "grow" very slowly, at an average rate of 1 to 10 millimeters per million years D) are inexpensive to collect and are, therefore, widely exploited
You are the chief executive officer (CEO) of a large bus company that transports passengers long distances across the United States
You want to be environmentally "friendly" and are considering replacing your older buses with those that run on hydrogen fuel. However, your executive board dislikes the idea. Which one of the following arguments is valid and could be used by the board to dissuade you from adding hydrogen-fueled buses to your fleet? A) Hydrogen vehicles are actually more polluting than gasoline-powered buses, so the environmentally friendly thing to do would be to add gasoline-powered buses to the fleet. B) Hydrogen vehicles are unsafe and have been known to spontaneously combust when rear-ended. C) Hydrogen vehicles have a range of only around 50 miles, and they take hours to refuel, so hydrogen buses would not be a wise choice for vehicles traveling across the country. D) It may be difficult along some bus routes to find gas stations that sell hydrogen fuel.
Habitat fragmentation usually leads to a(n)
A. Increase in biodiversity due to the isolated populations B. More stable environment C. Decrease in biodiversity D. Reduction in the number of introduced species
What is the difference between a floodplain and a stream terrace?
What will be an ideal response?