Biogeology is an interdisciplinary field of geoscience that focuses on the interactions between living organisms and the Earth’s surface. It combines elements of biology, ecology, geology, chemistry, and environmental science to understand how life has shaped and been shaped by the geologic processes of our planet. At its core, biogeology studies the relationships between the biosphere (the parts of the Earth’s surface where living organisms exist) and the geosphere (the solid and liquid parts of the Earth).