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because the organism is distributed across the world, and isn't seen anymore, scientists can conclude tat they must have evolved. They can compare one species to the fossils they may have found, and determine that they were related. Then by looking at the species on another part of the world compare the same fossils to other animals and determine that they are similar, sharing a common ancestor.
Geographic distribution of organisms supports evolutionary theory by biogeography, the study of the geographical distribution of organisms, provides information about how and when species may have evolved. The geographic distribution of organisms on the planet follows patterns that are best explained by evolution in conjunction with the movement of tectonic plates over geological time.
What is geographic distribution?
"Geographic distribution is defined as the natural arrangement and apportionment of the various forms of animals and plants in the different regions and localities of the earth."
What is geographic distribution in evolution?
"The geographic distribution of organisms on Earth follows patterns that are best explained by evolution, in combination with the movement of tectonic plates over geological time."
What is biogeography?
"Biogeography is the study of the patterns of geographic distribution of organisms and the factors that determine those patterns."
What are the main fields of biogeography theory?
Biogeography is broken into three main fields of study:
- historical biogeography,
- ecological biogeography, and
- conservation biogeography.
What do you mean by evolutionary theory?
"Evolutionary theories take the long-term look at the emergence of the human species. According to this perspective, humans of today carry with them genetically guided characteristics passed from generation to generation that have contributed to survival and reproductive success."
What is the main idea of evolutionary theory?
The four key points of Darwin's Theory of Evolution are:
- individuals of a species are not identical;
- traits are passed from generation to generation;
- more offspring are born than can survive; and
- only the survivors of the competition for resources will reproduce.
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