Organisms and Habitats
The community of organisms that lives in a particular area along with the nonliving environment.
Ecosystem
An organism that can make its own food.
Producer
A series of events in which one organism eats another and obtains energy and nutrients.
Food Chain
An interaction in which one organism kills another for food or nutrients.
Predation
A sea lamprey attaches itself to a lake trout, feeding from the trout's body and harming it.
Parasitism
The parts of a habitat that are or were once alive.
Biotic Factors
A consumer that eat only animals.
Carnivore
Consists of many overlapping food chains in an ecosystem.
Food Web
A relationship in which one species benefits and the other species is neither helped nor harmed.
Commensalism
A Burmese python hunts and kills a raccoon for food.
Predation
The nonliving parts of an organism's habitat.
Abiotic Factors
A consumers that eat both plants and animals.
Omnivores
What do third-level consumers eat?
Second-level consumers.
The struggle between organisms to survive as they use the same limited resources.
Competition
The hermit crab attaches sea anemones to its shell. The sea anemone provides protection for the crab and gets scraps from the hermit crab.
Mutualism
All the different populations that live together in an area.
Community
Consumers that eat only plants and other photosynthetic organisms.
Herbivores
What do second-level consumers eat?
First-level Consumers
A relationship in which both species benefits.
Mutualism
Two male alligators fight to claim a female alligator.
Competition
All the members of one species living in a particular area.
Population
Organisms that break down biotic wastes and dead organisms returning the raw materials to the ecosystem.
Decomposers
What do primary consumers eat?
Producers, Plants
A relationship that involves one organism living with, on, or inside another organism and harming it.
Parasitism
A remora attaches itself to a lemon shark in Florida Bay. The remora gets a ride and food scraps. The lemon shark in unaffected.
Commensalism