Which of the following best explains why some volcanoes erupt so violently?
A. combustion as nitrogen gas compounds react with atmospheric oxygen
B. rapid temperature drop as magma reaches the surface environment
C. rapid decompression of dissolved gases
D. cooling effect of seawater beneath island arc volcanoes
E. all of the answers listed here
Answer: C
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Why is the Kuiper belt considered to be a zone of failed planet formation?
A. The dwarf planets found therein have yet to fully accrete all of the material in their orbital paths. B. There is simply not enough material within the dwarf planets' orbital paths for any of them to ever add up to full planetary status. C. Because none of the dwarf planets are massive enough to maintain an atmosphere. D. Both A and B are reasonable.
When populations spread out from urban centers creating conurbations, the Census Bureau created the term ________ to describe these areas
A) metropolitan statistical areas B) major urbanized regions C) agglomeration D) high density rural areas
What one thing remains relatively constant through the seasons in tropical biomes?
A) moisture B) temperature C) faunal composition D) dry season intensity E) precipitation
The first law of thermodynamics states that energy can neither be created nor destroyed.
Answer the following statement true (T) or false (F)