DNA in all humans are composed of the same stuff just not the same genes (basically) . Organisms like sea animals for example wouldn't have the same DNA with us because they havebto survive in a different environment and have to have special obillities
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A positively charged benzenonium intermediate
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Assuming the options found elsewhere, one of the achievements of pre-Columbian (i think you mean Mesoamerican, not "mess") cultures would show that they had intensive architecture, which they sustained through intensive agriculture.
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Hoped this helped:)
