Assuming an environmental lapse rate of 6.5 degrees per 1,000 meters and a surface temperature of 20 degrees centigrade, at what elevation would freezing temperatures be found?
a. 2,000 m.
b. 2,750 m.
c. 3,333 m.
d. 4,000 m.
C
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North America and Eurasia enjoyed at least four major glacial stages during the most recent Ice Age. Indicate whether the statement is true or false
Which of the following is the least relevant to the concept of threshold?
A) Movie theaters have different thresholds for different sizes of theatres. B) Large supermarkets need to be in an area where at least 25,000 people can get there within 15 minutes. C) A department store also has gas stations. D) Analysis is performed to determine average travel times to different parts of the city. E) A survey is conducted to understand what the average income is of nearby neighborhood.
Which of the following is an example of cost-space convergence?
A) Jules Verne wrote a book entitled "Around the World in 80 Days," in the late 1800s; today Landsat satellites can orbit the earth once in only 99 minutes. B) Travel from Edinburgh to London dropped from 2,000 minutes by stagecoach to 800 minutes by steam locomotive. C) The number of people traveling by air increased dramatically after deregulation resulted in lower airfares. D) A proposed bullet train in California, which will average over 200 miles per hour, will travel from Los Angeles to San Francisco in just over two hours, beating the 5 hours it currently takes to drive. E) all of the above
A mineral specimen with a Mohs hardness of 5 can scratch a mineral specimen with a hardness of 3.
Answer the following statement true (T) or false (F)