here are endemic (meaning they are found here ONLY) and their differences from each other from island to island as well as from the mainland are what cemented in Darwin’s mind the mechanism of evolution and how it worked: Natural Selection. Galapagos covers 53,300 square miles of the Pacific and consists of 13 major islands, 6 smaller ones, and scores of tiny islets and skerries. Total land mass is 3,125 square miles (about the size of Arkansas). The Islands bestride the equator and lie 1000 miles south of Guatemala and 1000 miles north of Easter Island and are about 600 miles west of mainland Ecuador.
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