Answer:
<h2>xjiiiiiiiiiiii</h2><h2> pfnio</h2>
Explanation:
D. Homeostasis- naturally selected function
Answer:
The correct answer would be thrombin.
The last step in the blood clotting is the formation of a fibrin clot.
Thrombin is the serine protease (protein) enzyme which activates fibrin.
It converts the soluble fibrinogen into the insoluble fibrin which then results in the blood coagulation.