Similar concepts:
* Ecosphere: This emphasizes the interconnectedness of living things and their environment.
* Life zone: This highlights the regions on Earth where life can exist.
* Living world: This is a general term encompassing all living organisms.
* Global ecosystem: This emphasizes the interconnectedness of all ecosystems on Earth.
More general terms:
* Planet: This is a broad term that encompasses all aspects of Earth, including the biosphere.
* Earth: This is another broad term that can be used in some contexts.
The best synonym will depend on the specific meaning you want to convey.
