Which of the following ideas is supported by darwin's observations of local variation among tortoises in the galapagos islands?
a: artificial selection
b: adaption
c: acquired characteristics
d: tendency towards perfection

Consider darwin's first writings on the theory of natural selection. an important point of darwin's essay on the principle of population, written in 1798, was a peer's observation that in nature plants and animals produce far more offspring than can survive, this observation can be attributed to a) charles lyell. b) thomas malthus. c) jean-baptiste lamarck. d) johann friedrich meckel.