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A) they monitored the lives of their subjects from birth to age 34
B) they chose subjects who had only committed minor crimes
C) all men born between September 1959 and December 1961 were
studied
D) other possible causes of crime were also considered
E) they studied so many men from so many different
countries
James Harrison thought he could make a fortune if he could freeze and transport surplus beef and
mutton to England, where meat prices were very high. Ice -making machines had been developed in
the, 1830s, but in
order to keep the food frozen, a refrigeration machine had to be developed to ensure
a stabilised temperature. Harrison patented his machine in 1857 and by 1873
had perfected his
method. He arranged a special meal to celebrate his invention. The meat he served had been
completely
frozen for six months, but not one dinner guest could tell that it wasn't freshly
slaughtered.
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