Where did the bubonic plague originate?
A) Asia
B) Australia
C) North America
D) South America
E) southern Africa
A
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Volcanoes form above subduction zones because ________.
A) the lithosphere thickens above the subducting lithosphere and causes volcanoes to form
B) the subducting lithosphere melts as it descends and the magma rises to form volcanoes
C) water is squeezed out of the subducting slab and the water triggers melting of the overlying asthenosphere
D) the asthenosphere is displaced by the subducting lithosphere and rises to the surface to form volcanoes
What is the difference between magnetic declination and magnetic inclination?
What will be an ideal response?
Why are there concerns about the long-term effects of oil spills, such as chronic, delayed, or indirect impacts?
What will be an ideal response?
Which of the following is NOT true about alternative sources of energy?
A. Ethanol is mostly produced from corn and sugar cane, which can also be foods. B. Biomass energy can involve burning scrap wood and methane from landfills. C. Using solar energy requires a large investment in photovoltaic panels and other infrastructure. D. Fuel cells use oxygen and hydrogen as a fuel.