# "The almost complete absence of evidence of erosion or soil layers or the activity of living things (plant roots, burrow marks, etc.) at the upper surface of the various strata (showing that the stratum did not lay there for thousands or millions of years before the next layer was deposited)."<ref name="aigcompelling" /> | # "The almost complete absence of evidence of erosion or soil layers or the activity of living things (plant roots, burrow marks, etc.) at the upper surface of the various strata (showing that the stratum did not lay there for thousands or millions of years before the next layer was deposited)."<ref name="aigcompelling" /> |