What kind of information can a dendrochronologist get from examining the rings of a tree

Based on the evidence in the excerpt above, describe in your own words what it would have been like for a person to enter a meat processing plant in the united states

If the coding part of an mrna molecule is 1800 nucleotides (bases) in length, this molecule will contain codons and code for a polypeptide that is amino acids long.

Construct at least two possible hypotheses for the student’s experiment.