Final answer:
Three images that represent essential elements of geography are described and explained.
Step-by-step explanation:
Image 1: A 19th-century reconstruction of Eratosthenes map of the known world, circa 194 B.C.E.
This image represents the essential element of The World in Spatial Terms because it is a map that shows the relationships between different places and regions on Earth.
Image 2: A photo of environmental geographers studying the natural environment
This image represents the essential element of Environment and Society because it shows how human activities modify the physical environment and use Earth's natural resources.
Image 3: A map showing the spatial distribution of human populations in different regions
This image represents the essential element of Human Systems because it illustrates the distribution, migration, and settlement of human populations.