Which step in the hydrologic cycle distills or purifies water?
a. Precipitation
b. Runoff
c. Extraction
d. Evaporation
Answer: D
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How do treadmills of production tend to make the economy act like it has “invisible elbows”?
a) By deliberately and inadvertently causing environmental degradation b) By battling for economic survival of the fittest c) By guiding all towards prosperity due to competition d) All of the above
Relief is a term used to describe the horizontal distance between valley floor and mountain top.
Answer the following statement true (T) or false (F)
Which of the following scenarios would likely result in the development of a passive continental margin?
A) Two tectonic plates colliding, creating a submarine trench B) Continental blocks rifting apart and becoming separated by seafloor spreading C) Two tectonic plates sliding past each other, rotating part of the crust D) A mantle plume creating a chain of volcanic islands across the seafloor
In the concept of the food chain, the fundamental unit consists of ________
A) bacteria B) plants C) humans D) secondary consumers E) predators