Answer:
Warm and Humid
Step-by-step explanation:
When a climate is referred to as Warm and Humid, there is a high probability of soil erosion occurring mostly as a result of constant rainfall, causing flood and eventually leads to soil erosion.
The high rainfall occurring in a warm and humid climate is a result of the area being near to the sea and with relative heat to evaporate the water into the atmosphere.
Hence, a warm and humid climate is characterized by rainfall, the rain often washes the surface of the land causing soil erosion.
Therefore, the Gulf Prairies and Marshes ecoregion experience significant soil erosion. One would expect the climate in this region to be "warm and humid"