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ECOLOGY: THE RELATIONSHIPS BETWEEN LIVING THINGS AND THEIR ENVIRONMENT.
Terms to Know:
Biotic – all living organisms
Abiotic – all non-living things (air, water, light, rocks, soil,…)
(a - means without; bio - means life)
ORGANIZATION OF LIVING THINGS (BIOTIC)
Species – group of organisms able to Interbreed,
under natural conditions, and produce fertile offspring.
A liger (cross btwn. A tiger and lion in a zoo is not natural condition.
A donkey bred with a horse makes a Mule –which is sterile.
Fertile: can reproduceSterile: cannot reproduce
ORGANIZATION OF LIVING THINGS (BIOTIC) CONTINUED…
Population – group of 1 species living in the same place at the same time.
Community – several populations that interact with each other.
Ecosystem – all of the populations in the community and the environment (abiotic) . Can be Aquatic – in water Or Terrestrial – on land
ORGANIZATION OF LIVING THINGS (BIOTIC)CONTINUED…
Biosphere: The layer of the earth where life exists
(includes the soil and into the atmosphere)
Other Ecology Terms to Know:
Habitat : where an organism lives
Niche : what an organism does to survive/it’s job in the ecosystem.
SPECIES INTERACTIONS
SYMBIOSIS – A close relationship btwn 2 species in which one or both depend on the other.
TYPES OF SYMBIOSIS
Mutualism Commensalism
ParasitismCompetition
Predator-Prey