KEY CONCEPT The biosphere is one of Earth’s four interconnected systems.
The biosphere is the portion of Earth that is inhabited by life. The Biosphere includes all ecosystems. one of Earth’s systems includes the biota, all the living things in the biosphere Also called the Ecosphere
There are three other Earth systems. Hydrosphere—water, ice, and water vapor Atmosphere—air blanketing Earth’s solid and liquid surface Geosphere—geologic features above and below Earth’s surface
Biotic and abiotic factors interact in the biosphere. All four Earth systems are interconnected. The Gaia hypothesis ( Greek goddess of Earth) considers Earth as a kind of living organism. Earth systems interact to yield a biosphere capable of supporting life. Feedback loops (give and take) Plants & Carbon dioxide It was developed by James Lovelock and Lynn Margulis.
Gaia Hypothesis