The outer and inner cores together make up approximately ________ of the mass of the Earth
A) 1/30,000
B) 1/3,000
C) 1/300
D) 1/30
E) 1/3
Answer: E
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The conversion of formerly state-run businesses to private enterprise is called
A. deindustrialization B. cooptation C. privatization D. rationalization
During the Northern Hemisphere winter, isotherms are ____ those observed in July
A) farther apart than B) varied depending on proximity to landmasses compared to C) closer together than D) equally spaced as
The greenhouse effect is ____.
A. the reason no heat energy escapes from Earth into space B. when solar energy absorbed by the earth radiates into the atmosphere and is absorbed C. caused by solar radiation warming the earth's atmosphere D. entirely due to human activities E. the reason that volcanic eruptions can temporarily cool the planet
How many half-lives are required to yield a mineral with 2,000 atoms of parent isotope and 30,000 atoms of daughter isotope? If the half-life of the parent-daughter isotope pair is 1.0 billion years, how old is the rock? Please show your work
What will be an ideal response?