Most magma is generated in Earth's upper mantle by ________ of solid rock
A) decompression melting
B) partial melting
C) diffusion
D) crystallizing
Answer: B
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In the past, most Western ethics concerning the human relationship to the natural environment have been based on
A) the utility of the environment to humans. B) conserving natural ecosystems without alteration. C) the aesthetic value of natural systems. D) reverence and respect for the spiritual aspects of the natural world.
How may evolution lead to the development of new species (speciation)?
What will be an ideal response?
Of the two major mountain belts in North America, the ________ are in the West.
A. Andes B. Urals C. Himalayan D. Appalachians E. North American Cordillera
Decreasing salinities and lower density, water near the equator is due to
A. upwelling conditions created by highly saline surface waters. B. upwelling conditions created by freshwater surface waters. C. unstable conditions creating abundant rain. D. stable conditions creating abundant rain.