B. The windward side of the mountains receives more rain than the leeward side.
Explanation:
The wind picks up water that is later rained down over the land. The mountains add a block for the winds to bring the wind to the leeward side. This happens in real life with Las Vegas and Henderson in Nevada. The whole area is blocked off by mountains leaving the land dry.
Index fossils (also known as guide fossils, indicator fossils or zone fossils) are fossils used to define and identify geologic periods (or faunal stages).
