Alveoli is the correct answer. It is where Oxygen exchange takes place
In this type of descent group, two individuals cannot actually trace how they are related by blood; rather, they trace their descent to a mythical ancestor.
-Clan
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The dura mater is the membrane that covers the surface of the brain.
Option D.
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Answer:
Decomposers are organisms (mostly bacteria and fungi) that break down dead plants and animals, eventually turning them into nutrients that will be added to soil. These nutrients are very important to continue the cycle in the ecosystem. Slugs, earthworms, millipedes, and centipedes also help break down dead things.
Explanation: