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Ecology
Ecosystems and other things like them
20
Science
9th Grade
12/16/2010

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Cards

Term
What is an organism?
Definition
An individual living thing
Term
What is a population?
Definition
A group of organisms of one type that live in the same area
Term
What is a community?
Definition
A populations that live together in a defined area.
Term
What is an ecosystem?
Definition
A community and its nonliving surroundings.
Term
What is a biosphere?
Definition
Made up of entire planet
Term
What is a biotic factor?
Definition
A living thing (plant or animal).
Term
What is an abiotic factor?
Definition
A nonliving factor that affects the ecosystem (soil, light, air currents, etc).
Term
Producer
Definition
Makes its own food.
Term
Herbvore
Definition
Eats plants only.
Term
Omnivore
Definition
Eats plants and animals
Term
Scavenger
Definition
Eats dead things for food.
Term
Decomposers
Definition
Breaks down dead organisms
Term
How much energy is transferred between each trophic level?
Definition
10%
Term
What is a trophic level?
Definition
Represents the links of a food chain.
Term
Competition
Definition
Interaction between organisms trying to obtain the same source.
Term
Which animals are harmed in competition?
Definition
Both
Term
Commensalism
Definition
One species benefits off another which is neither helped nor harmed.
Term
Predation (predator vs. prey)
Definition
One organism hunts another for food.
Term
Mutualism
Definition
Both speicies benefit
Term
Parasitism
Definition
One organism benefits at the expense of another.
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