In this laboratory experiment, you will write a narrative history of a rock section found in the grand canyon. you will describe and explain the events starting with the vishnu schist forming and ending with the unconformity above the redwall limestone in the mississippian. your description should include environmental changes.
• sea level lowered, and the esplanade sandstone was deposited in a beach
environment.
• erosion, and the sea level rose.
• hermit shale deposited in a deeper sea.
• sea level drops, returning the area to a beach environment where the
coconino sandstone was deposited.

ocean level brought down, and the esplanade sandstone was saved in a shoreline environment.  erosion and the ocean level rose.  hermit shale saved in a more profound sea. 

sea level drops, restoring the zone to a shoreline domain where the coconino sandstone was deposited.  interpret the base portion of the cross segment beneath. begin with the vishnu schist and end with the redwall limestone.

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides