Final answer:
Geography is the study of spatial variation, how and why things differ from place to place on Earth, and how observable spatial patterns evolve through time.
Step-by-step explanation:
Geography is the study of spatial variation, how and why things differ from place to place on Earth, and how observable spatial patterns evolve through time. It is the spatial study of the Earth's surface, including its physical characteristics, its inhabitants and cultures, climate, and its place within the universe. Geographers also examine how the Earth, its climate, and its landscapes are changing due to cultural intervention. Geography bridges the social sciences with the physical sciences and encompasses both physical geography, which studies the Earth's physical systems, and human geography, which focuses on human culture and interactions with the environment.