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Ecology Unit 3 Vocab
Vocabulary terms from Unit 2
Terms in this set (37)
Also called biotic factors or the living things in a habitat
Also called abiotic factors or the nonliving things in a habitat
A behavior or physical characteristic that allows an organism to live successfully in its environment.
A collection of all the food chains in an area; shows are organisms are connected through feeding relationships
The variety of living things in an area which can be observed in a food web
Organism that is able to make its own food; makes up the first level of any food chain or web; also called autotrophs
Organism that cannot make its own food; must eat other animals for food; also called heterotrophs
An organism that breaks down wastes and dead organisms
Microscopic plant life
Microscopic animal life
A consumer that eats other animals
A consumer that eats plants
A consumer that eats animals and plants
A consumer that eats carrion (dead animals)
A consumer that eats plankton
A consumer that eats insects
Organisms that hunts and kills its food
Organism that is hunted and killed for food
The decaying flesh of dead animals enjoyed by scavengers
The percent of the energy that passes to the next trophic level in an energy pyramid
Shows the direction energy flows in a food chain or web; points to the organism doing the eating
An organism, such as plants, that makes its own food; also called producers
Single-celled organisms that do not have a nucleus; often classified as decomposers in a food chain or web
Organism that obtains energy from the foods it consumes; also called a consumer
A one-celled or many-celled organism such as a mushroom, yeast, or mold
Also known as the feeding level; where an organism is located in a food chain or web
Animals obtain this from the foods they eat
A series of steps in which organisms transfer energy by eating and being eaten
The struggle between organisms to survive in a habitat with limited resources, such as walleye and sturgeon competing for food
Main source of energy for life on earth.
An interaction in which one organism kills another for food.
The top-level consumers in a food web or chain
Eat producers in a food chain, such as herbivores and omnivores, are called ___ level or primary consumers.
A limited supply of these creates competition in an ecosystem
Carnivores or omnivores that eat 1st level consumers in a food chain are called ___ level or secondary consumers.
___ level or tertiary consumers includes mostly carnivores
The concentration of toxins in organisms at higher levels in a food web
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