Answer:
Both hold bodies of water above and underground.
Explanation:
Smooth er has less things inside of it and rough is more complex.
<span>The main significance of the fossils Darwin found
was that they inspired/reenforced his theory of evolution by showing
that the bone structures of species have changed over time. </span>
The mucus blocks the path from which the air/smells enters in through and causes your smell to be dodgy.
