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Ecology

TermDefinition
Abiotic All NONLIVING factors in an ecosystem (Oxygen, temperature, humidity…)
Autotroph AKA PRODUCERS, they are the PHOTOSYNTHETIC organisms (Plants) in an ecosystem
Biodiversity The concept that more species in an ecosystem produces stability
Biosphere The portion of Earth where ALL LIVING THINGS EXIST (in air, water or ground)
Biotic All LIVING organisms in an ecosystem (plants, predators….)
Carnivore Animals that feed on other animals (MEAT)
Commensalism Symbiotic relationship between two different organisms when one organism benefits and the other is unharmed
Consumer Organism that obtain their nutrients from eating other organisms (AKA HETEROTROPHS)
Decomposer Bacteria and fungi that RECYCLE NUTRIENTS of dead organisms by releasing them to the soil. They are the last step in any food chain
Ecological Succession The progression from pioneer organisms in an area to the climax community
Ecology The study of the interactions of organisms and their environment
Ecosystem Community of organisms and the environment they occupy
Energy Pyramid The concept that as you move up the food pyramid, the amount of energy available to organisms decreases due to loss of that energy to the environment as HEAT
Environment Surroundings of any organism
Food Chain A series of organisms through which energy is passed based on who eat who
Food Web Interconnected food chains
Habitat Part of the environment that an organism lives
Herbivore An organism that eats only plants
Heterotroph Organisms that cannot make their own food and rely on getting it from other organisms
Host Organism on which another parasitic organism lives and gets nutrition
Interdependence In ecology, the concept that all organisms in an ecosystem affect each other
Limiting Factors BIOTIC (living) or ABIOTIC (non-living) things in an environment that cause a population to not increase in number
Mutualism When two DIFFERENT organisms live together for the benefit of BOTH
Nutrient Cycles The flow of substances necessary for life through an ecosystem
Parasite Obtains nutrients from a host at the host's expense
Pioneer Species An animal or plant species such as lichen that is the first to arrive in a depleted environment
Population All individuals of the same species
Prey Any ANIMAL that is fed on by a predator
Producer AKA autotroph, organisms such as plants that make their own food through photosynthesis
Scavenger CARNIVORE that FEEDS on animals PREVIOUSLY KILLED by others
Water Cycle The pathways of water through an ecosystem consisting of evaporation, condensation, preciptation and run-off
Created by: hhazzard
 

 



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