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Genetic ancestry testing, or genetic genealogy, is a way for people interested in family history (genealogy) to go beyond what they can learn from ... from many people can be used by scientists to explore the history of ... Can a direct-to-consumer genetic test tell me whether I will develop Alzheimer disease?
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B. Erosion and D. Index fossils are geologic features that help scientists to determine relative ages of rocks by their positions.
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IT IS NILE RIVER IT IS NUTRIENT POOR