<span>The
enzyme name that catalyzes the reaction that converts fibrinogen to fibrin is <span>Thrombin. </span>The thrombin is
an enzyme - type peptidases. It is not part of the blood, but is <span>formed as part of the blood clotting process.</span></span>
With a higher population there are more people to have chances at getting sick. Now once someone gets sick most people are bunched up in cities meaning there in contact with a lot of others making the disease spread quickly.
From - brainly.com/question/11776474#readmore
