During a trip to the Galapagos Islands, which observation led Charles Darwin to suspect that organisms change over time?
Island finches were able to breed with mainland species.
Island finches resembled mainland finches, but were not the same species.
Island finches resembled extinct species from other islands around the world.
Island finches did not have beaks of the same size and shape.

Which of the following observation darwin shape his concept of descent with modification? a) species diversity declines farther from the equator. b) fewer species live on islands than on the nearest continents. c) birds live on islands located farther from the mainland than the bird's maximum nonstop flight distance. d) south american temperate plants are more similar to the tropical plants of south america than to the temperate plants of europe. e) earthquakes reshape life by causing mass extinctions.