Dense minerals, like magnetite and native gold, may be concentrated in a crystallizing magma chamber by
A. porosity.
B. gravity.
C. gases.
D. fluids.
Answer: B
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There are some organic materials that you should not compost. For example, meat and fish bones could attract flies and rodents. Give examples of other organic materials that should not be composted.
What will be an ideal response?
Mongolia borders ________ to the north and ________ to the south
A) Russia; China B) China; Japan C) North Korea; South Korea D) Russia; India
The large peak in electrical generation from 2000 to 2005 represents the availability of large new amounts of
A) natural gas and renewable energy resources. B) coal. C) nuclear power. D) hydroelectric power.
Why are mirages generally associated with either very hot surface temperatures or very cold surface temperatures?
What will be an ideal response?