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How can a geological time scale best be reconstructed? a) comparing vestigial structures in living species b) comparing homologous structures in living species c) examining homologous structures in fossil remains d) examining the written records of scientists from past cultures
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Suppose these two chromosomes are found in a cell nucleus during prophase. what is the relationship between chromatids a, b, c, and d? select all that apply
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What effect does human activity have on many ecosystems? it increases recycling. it attracts rodents. it decreases pollution. it destroys habitats.
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