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Darwin wondered why so many species had disappeared and how they were related to living species.
more than 6,000 years old
Darwin realized after seeing a bunch of fossils (and the differences between the finches on the Galapagos Islands) that animals must be adapting to better fit their environments, and thus, becoming more diverse.
One observation that Darwin made was the fossilized armadillos and these fossils closely resemble, but were not identical to, the armadillos living in the area. Another observation he made was the fact that the plants and animals of the Galápagos Islands resembled those of the nearby coast of South America.
Darwin found fossils that were similar but not the same as living species.Living species might have some relationship to the fossil form. In order for such changes to occur, Darwin figured that earth must be much older than 6000 years.
evolution for the first blank
Darwin predicted that the fossil record would either prove or falsify his theory. Darwin realized the difficulty the fossil record (missing links) gave his theory when he said, "Why, if species have descended from other species by fine graduation, do we not everywhere see innumerable transitional forms? Why is not all nature in confusion, instead of the species being, as we see them, well defined?" Today, top evolutionists know that Darwin's predictions of what the fossil record would reveal have failed.
The observation that Darwin made for the species on Galapagos Island is that they adopt the feature according to the habitat they are living in. You can get more info on naturegalapagos.com
Darwin originated the idea that living things evolve by the means of natural selection. He discovered that species change over time and that they adapt to their habitats. He wrote the Origin of the Species, which caused a lot of controversy.
Fossil records back up evolution by showing the ancestors of extant species. If species didn't evolve, the fossils would be of species currently living, since none of them would have changed. Extant = Currently living Extinct = No longer living
Fossils were of grear interest to early scientists because there: * appered to be of unusual, unknown organisms that were no longer living * are no fossils of most living species * buried very deep within rock more than 1km
Prvided scientific evidence that all species of life have evolved over time from one or a few common ancestors. Book "On the Origin of Species" Examined human evolution and sexual selection Found a lot of geological features, fossils, and living organisms that scientists did not know about Studies as a geologisst solved the puzzle of the info. of coral atolls