Earth's magnetic poles
A) are fixed.
B) are migrating approximately 55 to 60 km (34 to 37 mi) per year.
C) are perfectly aligned with Earth's axis.
D) are misaligned from Earth's axis by 23.5 degrees.
B
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The case of the passenger pigeon best illustrates the
A. strength of natural selection. B. theory of evolution. C. concept of coevolution. D. role humans play in extinction of species. E. excellence of enforcing laws to protect species.
A type of mass wasting that forms quickly, moves rapidly, and transports both small and very large
objects and can be very dangerous is ____________________. Fill in the blank(s) with the appropriate word(s).
Which of the following was the primary cause of suburban growth?
A. rising automobile usage B. high rural land cost C. industrial growth and pollution D. All of the statements are correct.
You are in upstate New York and observe the wind shift from easterly to southerly. This shift in wind is accompanied by a sudden rise in both the air temperature and dew-point temperature. This means a(n) ____ front passed
a. cold b. occluded cold c. stationary d. dryline e. warm