The abiotic factors of the environment include light, temperature, and atmospheric gases.
Abiotic
A microorganism that uses only inorganic materials as its source of nutrients; carbon dioxide is the autotroph's sole carbon source.
Autotroph
a large, distinct, easily differentiated community of organisms arising as a result of complex interactions of climatic factors, flora, fauna, and substrate; usually designated according to kind of vegetation present, such as tundra, coniferous forest, deciduous forest, or grassland.
Biome
pertaining to all plant and animal life or living organisms
Biotic
All regions in the world where living organisms are found.
Biotsphere
any animal that eats primarily flesh, particularly mammals of the order Carnivora, which includes cats, dogs, bears, and others
Carnivore
A symbiotic relationship in which one species derives benefit and the other is unharmed; for example, Entamoeba coli in the human large intestine.
Commensalism
A group of people living in the same locality and under the same government.
Community
The process by which the activity or presence of one substance interferes with, or suppresses, the activity of another substance with similar affinities
Competition
any organism which consumes other organisms to gain food resources. Macro consumers (phagotrophs) are chiefly animals which ingest other organisms or particulate organic matter (detritus)
Consumer
the fundamental unit in ecology, comprising the living organisms and the nonliving elements interacting in a certain defined area.
Ecosystem
power that may be translated into motion, overcoming resistance or causing a physical change; the ability to do wor
Energy
An ecological pyramid illustrating the energy flow within an ecosystem.
Energy pyramid
the interrelation of various species of plants, animals, fungi, and microorganisms that are connected to each other as food and food consumers
Food chain
A diagram depicting those organisms that eat other organisms in the same ecosystem. In some cases, the organisms may already be dead.
Food web
the environment in which an animal or plant normally lives or grows
Habitat
An animal that eats only vegetation.
Herbivore
living organism that obtains its energy from carbohydrates and other organic material. All animals and most bacteria and fungi are heterotrophic
Heterotroph
An interaction between two species that benefits both. Individuals that interact with mutualists experience higher success than those that do not.
Mutualism
The unique role or way of life of a plant or animal species.
Niche
the passage of a nutrient through an ECOSYSTEM so that it eventually becomes reavailable to the PRIMARY PRODUCERS.
Nutrient system
an organism feeding on both animals and plants. For example, humans have teeth adapted to chewing both types of material
Omnivore
symbiosis in which one population (or individual) adversely affects another, but cannot live without it.
Paratism
the individuals collectively constituting a certain category or inhabiting a specified geographic area.
Population
An organism that lives by preying on other organisms.
Predation
An organism, such as a green plant, that produces its own food through photosynthesis or chemosynthesis and constitutes the first trophic level in a food chain
Producer
in parasitology, the biologic association of two individuals or populations of different species
Symbiosis
The position of a species or a group of species within a food chain or food web.
Trophic level

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