blood flows at a high pressure, so if the arteries are thin and less muscular, the arteries can explode due to the pressure. so it needs thick and muscular properties so that it can withstand the increasing pressure of the flow of blood.
im not sure why it needs to be elastic. Hope it helped :)
(D) It uses enzymes to liquefy food and kill bacteria to be further digested in the intestines.
<span>Echinoderms are marine invertebrates, they dwell under the sea unlike that of others that mostly live in land.
<em>Hope this helps:)</em></span>
I believe that the best answer among the choices provided by the question is are the following :
<span> H2O2
H2O
</span><span>catalase</span>
Hope my answer would be a great help for you. If you have more questions feel free to ask here at Brainly.