What does a comparison of meteorite abundances of metals with samples of Earth's mantle help geochemists understand?
A) the formation of crust through volcanic action
B) the differentiation of Earth as it occurred after it formed
C) the accretion of Earth from planetesimals
D) the elements that have escaped Earth's gravity during its formation
Answer: B
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The specific heat capacity of aluminum is more than twice that of copper. Place equal masses of aluminum and copper in a flame and the quickest to heat up is the
A. aluminum. B. copper. C. both the same D. indeterminate
Seasons are caused by ____
A) changes in the weather B) annual variation in the energy output of the sun C) Earth's orbital tilt relative to the plane of its orbit around the sun D) our being closer to the sun in summer
Can the current increase in carbon dioxide level in Earth’s atmosphere be attributable to natural variation and not human activity? Why or why not?
What will be an ideal response?
List the major bodies of water for the Russian region: