Answer:
One Idea was the appreciation that the age of the Earth was much greater than had hitherto for been imagined.
The agent would prescribe the fresh-frozen platelets. This is
a blood produce made from the liquid share of entire blood. It is used to treat
circumstances in which there are low blood coagulation factors (INR>1.5) or small
levels of other blood proteins.
Through phosphorylation, Cdks signal the cell that it is ready to pass into the next stage of the cell cycle. As their name suggests, Cyclin-Dependent Protein Kinases are dependent on cyclins, another class of regulatory proteins. Cyclins bind to Cdks, activating the Cdks to phosphorylate other molecules.
the answer is the first one: by producing random changes in an organism's genetic code
