The biosphere is the life zone of Earth containing all ecosystems and living things. Ecosystems are large-scale natural areas containing biocenoses, which are ecological communities of living things, and biotopes, the physical environments and their characteristics that living things inhabit and interact within.

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.