Answer:
The villi in the small intestine provide a large surface area with an extensive network of blood capillaries. This makes the villi well adapted to absorb the products of digestion by diffusion and active transport.
Explanation:
<span>The ecosystem has land but with high sea levels</span>
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<span>metamorphic and igneous rocks
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Only sedimentary rocks can become, by changing temperature and pressure, in metamorphic rocks.
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The answer to your question is alkanes
<span>It has the advantage that only when the substrate is presence the genes responsible for its metabolism are turned on.</span>
