Consider the following statements:1. Columbus estimated that Asia must lie very close to Europe on the West on the basis of the work of Ptolemy.2. Strabo gave a correct explanation of the floods of the Nile, attributing them to the heavy rains in Ethiopia. Which of the statements given above is/are correct?

In geography, models are theoretical frameworks that let us predict things like spatial relationships, interaction with or across space, and other issues of geography. Geographers base models on large patterns and test these theories against real-world data to help determine how and why things happen as they do. 

For example, the study of Earth's landscape and composition through geography is organized into five themes: location, place, human-environment interaction, movement, and region.