A diagram showing all of the connected food chains in an ecosystem
Distribution or quantity of species in an area
An organism that breaks down dead organisms
A diagram that shows how energy decreases as it travels through a food chain
A diagram showing how matter and energy pass from one organism to the next in an ecosystem
An organism that eats both plants and animals
An organism that eats only other animals
An organism that eats only autotrophs
When two organisms fight over the same resource
All of the different populations of organisms in an area.
All of the living space on earth.
Abiotic and biotic things interacting in an area
All of the members of the same species in an area.
The organism that is hunted
The organism that hunts others for food.
A trait that helps an organism survive.
The resource that is most scarce and has a large impact on population size
The largest population size an ecosystem can hold.
A type of relationship where one organism benefits while harming the other organism
A type of symbiosis where one species benefits and the other is not harmed.
A type of symbiosis where two organisms help each other.
A relationship where two species interact
Living part of the environment
Non living part of the environment
The study of how living things interact with nature.
Chemicals that living things can use to live and grow.
Any organism able to make its own food (aka producer)
An organism that has to intake its food (aka consumer)
Used for organisms to do everything it needs to do to live
Third level consumer. Often top of the food chain
The 1st level consumer. Eats producers
Eats 1st level consumers. Often is a predator and a prey
4th level consumers. Food chains don't always go this far
An animal that eats other dead animals.
one individual living thing
environments grouped together by similar climates
the gradual and orderly process of change in an ecosystem brought about by the progressive replacement of one community by another until a stable climax is established
a stable, mature community that undergoes little or no change in species over time
first species to populate an area during primary succession
movement of individuals into an area occupied by an existing population
movement of individuals out of a population
Growth of a population in an ideal, unlimited environment, represented by a J-shaped curve when population size is plotted over time.
A model describing population growth that levels off as population size approaches carrying capacity
process in which fixed nitrogen compounds are converted back into nitrogen gas and returned to the atmosphere
process by which certain bacteria convert nitrogen gas to ammonia
the process by which molecules of water vapor in the air become liquid water
the process by which water changes from liquid form to an atmospheric gas
the process of burning fuel
each step in a food chain or food web
the emission of water vapor from the leaves of plants