The iron content in oceanic rock allows geologists to determine its age. What term describes this approach and other findings?
A. sea floor spreading
B. paleontology
C. oxygen-isotope analysis
D. paleomagnetism
E. continental drift
B
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Which of the following health problems is most closely associated with the thinning of Earth's ozone layer?
A) Skin cancer B) Blindness C) Heart disease D) Skin irritations
Which of the following conditions will occur when an upper-level low lies directly above a surface low?
A. Thunderstorms will develop. B. A wave cyclone will begin to form. C. The surface low will probably weaken. D. The pressure of the surface low will decrease.
Promoting place identity is an important way of eliminating conflicts between places and stereotypes of other people
Indicate whether this statement is true or false.
Life close to plate boundaries involves the hazards of
A. Drought and floods B. Dust storms C. Earthquakes and volcanic eruptions D. Blizzards