Which of these measurements was made with the most precise measuring device: 8.1956 m, 8.20 m, or 8.196 m? explain your answer.

Precision refers to the closeness of two or more measurements to each other. Like if one weigh a given thing five occasions, and achieve 3.2 kg each time, then the measurement is very precise. However, precision is autonomous of accuracy. One can be precise but inaccurate.  

In the given question, 8.1956 m is the most accurate measurement, as it is giving one the 10000th place of measurement.  

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