What event was an important cause of the surge of immigration to European countries (such as Germany) in the early 1990s?
A) the release of the last German colony in Africa in 1989
B) the expulsion of many foreign-born immigrants from France
C) Germany's mild climate
D) war in Syria and Iraq
E) the collapse of the Soviet Union
E) the collapse of the Soviet Union
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Advances in telecommunications and transportation technologies lead to the perception of a shrinking world
Indicate whether this statement is true or false.
Biostratigraphic units are based on fossil assemblages and are called biozones. Indicate whether the statement is true or false
Most sources of energy today are
A) fossil fuels. B) wind powered. C) based on coal and coal derivatives. D) from the developed world. E) renewable.
A large volcanic eruption can slightly cool the climate for a few years because ________.
A. volcanoes emit nitrogen (N2), a cooling agent in the atmosphere B. material they eject into the atmosphere reduces the amount of sunlight reaching Earth C. lava absorbs massive amounts of carbon dioxide as it cools D. volcanic gases bind with greenhouse gases, removing most of them from the atmosphere E. volcanic ash is good for soils and that speeds the growth of forests