What are the 4 different fields of study of earth's systems?

What can you learn about precipitation levels in south america from this map? brazil is experiencing a drought.it rains more in higher altitudes.peru received the highest level of rain.venezuela got less than 25 cm of rain. 

What geologic process is related to caldera formation?

Geographers most often use this type of map to study the characteristics of regions such as population and naturalresources because blank spaces are put into the map to prevent distortion.feelperfet