Nuclear fusion refers to
A) a magnetic induction device capable of accelerating electrons to energies of several hundred million electron volts.
B) the breaking apart of an atom's nucleus, a process that releases a vast amount of energy
C) the movement of protons and neutrons within the nucleus of an atom.
D) the joining of nuclei to form a heavier atom, a process that releases an even greater amount of energy.
E) None of these
D
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According to eugenic reformers, the alleged racial superiority of Anglo-Saxons might be compromised because of __________
A) the mixing of "inferior" groups and the propagation of "inferior" individuals B) the expansion of American settlement west C) an influx of German and Scandinavian immigrants D) increased immigration from Britain
In the 1820s, John C. Calhoun proposed his doctrine of nullification
A. as an alternative to possible secession. B. to support trade tariffs. C. to counter the growing influence of abolitionism in the North. D. to reduce the political power of Andrew Jackson. E. as a means to end the national bank.
The Sheppard-Towner Act, which created the first federally funded health care program, was repealed after opposition from the __________.
A. National Woman Suffrage Association B. American Federation of Labor C. National Woman's Party D. American Medical Association
What issue made science education controversial in the early twenty-first century?
a. protests against university genetics programs that researched eugenics b. protests against psychology classes teaching that homosexuality is a mental illness c. demands to bring global warming into the science curriculum d. demands for more federal funds to support and expand science education e. demands to teach intelligent design instead of evolution