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35 Cards in this Set

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Organism
A single living thing
Population
The number of organisms of the same species. "What is the population of penguins in the zoo?"
Community
All the organisms in an ecosystem. Such as "What are all of the living things in the marsh?"
Habitat
Conditions required for the survival of species
Biome
A collection of ecosystems that are similar or related in the dominant for of plant life. A large area with a characteristic climate.
Biosphere
All the biomes and all the ecosystems on Earth. Region on earth in which life exists.
Consumer
An organism that cannot make its own food and has to eat other organisms
Producer
An organism that can make its own food
Abiotic
Non-living factors in the environment such as wind, temperature
Biotic
Factors caused by living things such as bacteria
Food chain
A feeding pathway made up of several organisms.
Food web
Many food chains that inter-connected to each other
Ecology
The study of the interaction of living things with each other and with abiotic factors of the environment.
Abiotic
Factors in an ecosystem by non-living agents.
Biotic
A factor in an ecosystem created by the presence and rolls of other living things.
Ecosystem
In an area defined by ecologists the set of relationships between populations of species and between population of abiotic factors.
Ecotones
A transition area between two ecosystems that includes members of the community of both ecosystems
Community
A collection of all populations of all species in an ecozone. All organisms in an ecosystem.
Niche
Al ways in which an organism interacts with its biotic and abiotic environment
Trophic level
The way of categorizing living things according to how they gain energy First trophic level is autotrophs.
Autrotroph
an organism that uses energy and raw materials to make its own food, whether from photosynthesis or some other form of chemical synthesis a, a producer
Hetrotroph
An organism that is incapable of making its own food, and so must feed on another organisms to gain energy.
Omnivore
an animal that eats both plants and meat
Predator
an organism that attacks another organism for food
Prey
an organism that is the victim of another animal
Decomposer
An organism that feeds on detritus in the process releasing nutrients to soil and water where it can be used by other organisms
Extinct
A species that no longer exists
Endangered
is a species with a decreasing
Extirpated
One species that no longer exits in one part of a region but found in other regions.
Threatened
A species that is likely to become endangered if factors that make it vulnerable are not reversed
Vulnerrable
Any species that is at risk because of low or declining population at the fringe of its range
Mutulism
a relationship between two species of organisms in which both benefit from the association.
Commensalism
relationship between two organisms of different species in which one derives some benefit while the other is unaffected.
Parasitism
Relationship between two organisms where one benifits and another is killed
Symbosis
the living together of two dissimilar organisms, as in mutualism, commensalism, amensalism, or parasitism