Final answer:
The subject of this question is Geography, discussing the precipitation characteristics of Blackland Prairie-Prairies and lakes.
Step-by-step explanation:
The subject of this question is Geography. It is discussing the precipitation characteristics of Blackland Prairie-Prairies and lakes. The annual precipitation ranges from 25 cm to 75 cm (9.8-29.5 in), contributing to the dominant grasses and few trees found in this temperate grassland.