1. CompetitionCompetitionAbioticAbiotic
DominantDominant
SpeciesSpecies
PopulationPopulation Habitat
KeystoneKeystone
SpeciesSpecies
ExoticExotic
SpeciesSpecies
Definitions of Ecological Terms
EcosystemEcosystem BioticBiotic
DynamicDynamic
EquilibriumEquilibrium
HomeostasisHomeostasis
NicheNiche
SpeciesSpecies
CommunityCommunity BalanceBalance
Ecology

2. Row 1, Col 1
Ecology is the scientific study of the relation of living
organisms to each other and their surroundings.

3. 1,2
Biotic Factors are living things
that shape an ecosystem.

4. 1,3
Competition is the struggle amongst species
in an ecosystem
for the same resources or niche.

5. 1,4
Species refers to a group of organisms that look
alike and can interbreed.

6. 2,1

7. 2,2
Abiotic Factors are non-living chemical
and
physical factors in the environment.

8. 2,3
Homeostasis is the tendency of an organism
to maintain internal equilibrium by adjusting
its physiological processes
when resources are limited.

9. 2,4
A Dominant species is a species of plant
or animal that is
particularly abundant
or controls a major portion
of the energy flow in a community.

10. 3,2
Biotic Factors are living things that shape an ecosystem.

11. 3,3
Dynamic Equilibrium is any system
with constant change in which the
components adjust to the changes
without disturbing the entire system.

12. 3,1
Ecosystem is a biological environment
consisting of
all the organisms living in a
particular area, as well as all the nonliving things
in the same environment.

13. 3,4
A Keystone species is a species whose
influence on community
structure is greater than its abundance would suggest.

14. 4,1
Population is a group of organism of the
same species that live in the same habitat
at the same time.

15. 4,2
Habitat is a particular environment in which any
one species of plant or animal is able to live.

16. 4,3
Niche describes the relational position of an organism’s
species or population in its ecosystem to each other.

17. 4,4
An Exotic species is a species living outside
its native distributional range.
It may have arrived in the ecosystem by
human activity,
either deliberate or accidental.

18. 5,1
Community is made of all organisms
of various species that share an ecosystem.

19. 5,2
Balance is a condition of harmony or equilibrium.

20. 5,3
Niche is a term describing the relational position of a
species or population in its ecosystem to each other.

21. 5,4