So that other people can replicate the experiment.
if someone does an experiment and finds something interesting, they might publish the details of the experiment, so that other scientists may replicate it and verify that the experiment is real.
You would expect a scratch on the quartz since quartz is on a hardness scale of 7 and the mineral you are rubbing against it is at a hardness scale of 7.5
Answer:
RNA because it is single-stranded and contains the sugar ribose.
Explanation: