1. The biosphere
The
biosphere is
the life zone
of the Earth.

2. The ecosphere
The large-scale
ecosystems
of the world

3. All the living beings which inhabit a
natural area, the physical environemtn and the relationships between them.
Ecosystems
BIOCENOSIS
All the living beings which
inhabit a
natural area: an ecological
comunity.
BIOTOPE
The physical environment of
the ecosystem and its
characteristics.