This could be the different times you did the experiment
In the SI system of units, the standard unit of acceleration is 1 metre per second squared<span> (abbreviated as m/s2). Other units include the gal (sometimes known as a galileo, in either case with symbol Gal), which equals 1 centimetre per second squared, and the g (gn), equal to 9.80665 m/s2.</span>
I recomend to carb up before long run
I believe collecting the data and the hypothesis
Answer:
4. I would choose Gel Electrophoresis because you can use it for DNA sequencing, southern blotting or PCR