Answer:
The probability of exactly 3 heads in 10 tosses is 1201024.
Nucleic acids are long chainlike molecules that carry genetic information which is read in cells to make RNA and proteins by which living things function.
Essentially, a control variable is what is kept the same throughout the experiment, and it is not of primary concern in the experimental outcome. Any change in a control variable in an experiment would invalidate the correlation of dependent variables (DV) to the independent variable (IV), thus skewing the results.
The primary difficulty is the fact that we do not know all of the organisms that currently exist in the world along with those that existed in the past.
