The study of paleomagnetism has revealed that
A. the earth's outer core is mostly liquid iron.
B. the rocks of the sea floor are less that 200 million years old.
C. earth's magnetic field has reversed many times.
D. drifting continents follow the earth's magnetic lines of force.
Answer: C
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Which political leader led the 1911 revolution in China against the Qing dynasty?
A) Mao Zedong B) Chiang Kai-shek C) Kim Il Sung D) Sun Yat-Sen E) Chou En-Lai
Islam is the dominant religion in Central Asia. A significant minority of Roman Catholics, however, live in northern Kazakhstan
Indicate whether the statement is true or false
The interdisciplinary study of the causes and consequences of changing climate for all Earth systems and the sustainability of human societies is
A) climate change science. B) meteorology. C) paleoclimatology. D) climate policy.
You just purchased a new cell phone. Why is it a bad idea to throw the old one in the trash?
A) It contains radioactive elements. B) It contains heavy metals. C) It contains PCBs. D) It is compostable. E) It contains plastic.