Explanation:
building and maintaining a clean habitat treating and preventing illness and pests
The enzyme that is present within the stomach and the lining of the muscular gland, would function optimally in high H+ concentration and would require much HCl needed for an appropriate pH environment to function
This would be pepsin, I believe.
<span>the portal systems of mammals, where two capillary beds occur sequentially, without passage of blood through a pumping chamber</span>
The answer is Gravity. To ensure the one-way flow of blood
the veins contain a network of valves which arteries do not have. The reason is
for the veins to counteract the force of gravity on flow of blood. For example,
to increase the pressure of the blood back to the heart the veins must counteract
the force of the gravity.
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It breaks it into simple sugars!
