Clinical trial of dubious quality to test his hypothesis about vitamin C; a clinical trial that other researchers rated as defective. In his research, there was not even a randomization to take vitamin C or not, it was simply observed the three who were given the micronutrient, without having a subject who was not given to compare results.
Answer:
nucleotides
Explanation:
RNA and DNA are polymers made of long chains of nucleotides.
They did not have big differences between social classes and had extensive trade with nearby people<span>
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All plants and animals are made of cells