An ecosystem is defined as a biological community of interacting organisms and their physical environment. It includes both biotic factors such as plants, animals, fungi and bacteria, as well as abiotic nonliving factors like climate, soil and rocks. Within an ecosystem, organisms live in a habitat and often have symbiotic relationships where they live closely and benefit from one another.

2. ECOSYSTEM
A biological
community of
interacting organisms
and their physical
environment.

3. Habitat: The place where a
particular population (e.g.,
human, animal, plant,
microorganism) lives and its
surroundings.
ECOSYSTEM
A biological community
of interacting
organisms and their
physical environment.

20. Biotic: Living
factors such
as plants,
animals, fungi,
protist and
bacteria are all
biotic or living

21. Abiotic:
Physical, or
nonliving, factors
that shape an
ecosystem.
Examples
include rocks,
climate,
pressure, soils,
precipitation,

23. Symbiosis: Relationship
in which two species live
closely together, usually
benefiting from each other.
There are three types of