To learn about the amount of rainfall at that time and the kinds of plants that grew then, scientists should study Tree rings and Fossilized Pollen.
- Tree rings can provide information about past climate conditions, including rainfall patterns. The width of the rings can indicate wet or dry years.
- Fossilized Pollen offers insights into the types of plants that existed during that time period and can help reconstruct past vegetation and climate conditions.
These two specimens would be the most useful for the information sought.