Since humans cannot access the core, what objects do scientists use as a proxy to determine the composition of the inner and outer core?
A) Volcanic rocks
B) Meteorites
C) Comets
D) Glaciers
Answer: B
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An urban area where people have little or no easy access to nutritious food without traveling long distances is called a(n) ____.
A. rural food oasis B. urban food oasis C. food island D. food desert E. food bank
The exposed near-vertical slope separating undisturbed ground from slumped material is the:
a. crown b. main scarp c. head d. transverse crack
n regions with low rates of precipitation and high rates of evaporation, the halocline will __________.
-decrease in salinity with depth -not exist -increase in salinity with depth -increase in density with depth
Volcanic island arcs are found near which features on the seafloor?
A) Abyssal plains B) Coral atolls C) Deep-ocean trenches D) Rift zones