I would say B because of their population
1. The world in spatial terms
The purpose of the first essential element of geography is to study the relationships between people, places, and environments by mapping information about them into a spatial context.
2. Places and regions
The purpose of the second essential element of geography is to show how identities and lives of individuals and peoples are rooted in particular places and in those human constructs called regions
3. Physical systems
The purpose of the third essential element of geography is to identify how physical processes shape the Earth’s surface and how they interact with plant and animal life to create, sustain, and modify ecosystems.
4. Human systems
The purpose of the fourth essential element of geography is to show how people are central to geography in that human activities help shape the Earth’s surface, human settlements and structures.
5. Environment and society
The purpose of the fifth essential element of geography is to show how the the physical environment is modified by human activities, largely as a consequence of the ways in which human societies value and use Earth’s natural resources.
6. The uses of geography
The purpose of the sixth essential element of geography is to show how the knowledge of geography enables people to develop an understanding of the relationships between people, places, and environments over time -- that is, of Earth as it was, is, and might be.
Earth has algae and plants that make oxygen to lessen the amount of CO2 and replace it with O2 while venus does not
Conserving the site and protecting it from the elements.
