Which of the following features is NOT formed by precipitation of calcite from water?
A. flowstone
B. stalagmite
C. sinkhole
D. travertine
E. stalactite
Answer: C
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Which type of toilet uses the least amount of water?
A. composting B. low-flow 0.8 gallon per flush model C. low-flow 1.6 gallon per flush model D. low-flow 1.2 gallon per flush model
The processes that lead to geological erosion are essential to the movement of phosphorous through the biosphere
Indicate whether the statement is true or false
Which of the following is true of oil?
A) Oil was not produced in the United States until the middle of the twentieth century B) Oil was a minor resource until the diffusion of motor vehicles early in the 1900s C) Oil was discovered by Baron von Drusenberg of Austria in the later eighteenth century D) Libya has the world's largest proven oil deposits E) The United States imports about 5 percent of the total annual oil it consumes
What is the difference between an oceanic rift and an oceanic trench?
A. Rifts are where ocean crust is destroyed, and trenches are where ocean crust is created. B. Rifts mark divergent boundaries; trenches mark convergent boundaries. C. Rifts are younger than trenches. D. Rifts are deeper than trenches. E. There is no difference; they are just two different names for the same feature.