For Darwin, what was the value of his observations of pigeon breeders?
A. it showed him that adaptation to the environment is not always very important
B. he saw an analogy between artificial and natural selection
C. it gave him a first hand glimpse at the outcome of a struggle for existence (the pigeons had to fight for their food)
D. it provided evidence to support Lamarck's idea of the inheritance of acquired characteristics
B. he saw an analogy between artificial and natural selection
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In some ways, Federalists and anti-Federalists were split along distinctions of ______.
Fill in the blank(s) with correct word.
Which of the major African nationalist parties was more radical?
A. the Pan-African Congress (PAC) B. the African National Congress (ANC) C. the African Liberation Organization (ALO) D. the People's Front of Africa (PFA)
Manfred Freiherr von Richthofen was associated with which new technology employed to devastating effect in World War I?
a. poison gas b. barbed wire c. the machine gun d. artillery e. the airplane
One feature of the Columbian Exchange is that
a. the Native American populations dramatically increased. b. European crops grew in America, but American crops did not go to Europe. c. Europeans brought domesticated animals to American to breed and work. d. in the long run, it had little impact on American ecology.