An environment that provides the things a specific organism needs to live, grow, and reproduce

Parts of a habitat that are or were once alive.

The nonliving parts of an organism’s habitat.

A group of organisms that can mate with each other and produce offspring

All members of one species living in a particular area

All the different populations that live together in a area

Organisms that lives in a particular area, along with the nonliving environment

The study of how organisms interact

The individuals in an area of a specific size

An environmental factor that causes the population to stop growing or to decrease.

The largest population that an area can support

An organism that can make its own food

Obtains energy by feeding on other organisms

Break down biotic wastes and dead organisms, returning raw materials to the ecosystem.

A series of events in which one organism eats another and obtains energy and nutrients. The arrows indicate the flow of energy.

Many overlapping food chains in an ecosystem

Shows the amount of energy that moves from one feeding level to another in a food web.

Set of chemical reactions plants use to turn light, water and nutrients into oxygen and energy, in the form of sugars.

An organism that makes its own food

An organism that has to get its energy from another source.

A carnivore that feeds on the bodies of dead organisms

Consumer that eats both plants and animals.

A relationship that involves one organism living with, on, or inside another organism

A relationship in which both species benefit

Any relationship in which two species live closely together

A relationship in which one species benefits and the other species is neither helped nor harmed.

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Ecosystem

Term	Definition
Organism	A living thing
Habitat	An environment that provides the things a specific organism needs to live, grow, and reproduce
Biotic factor	Parts of a habitat that are or were once alive.
Abiotic factor	The nonliving parts of an organism’s habitat.
Species	A group of organisms that can mate with each other and produce offspring
Population	All members of one species living in a particular area
Community	All the different populations that live together in a area
Ecosystem	Organisms that lives in a particular area, along with the nonliving environment
Ecology	The study of how organisms interact
Population Density	The individuals in an area of a specific size
Limiting Factor	An environmental factor that causes the population to stop growing or to decrease.
Carry capacity	The largest population that an area can support
Producer	An organism that can make its own food
Consumer	Obtains energy by feeding on other organisms
Decomposers	Break down biotic wastes and dead organisms, returning raw materials to the ecosystem.
Food chain	A series of events in which one organism eats another and obtains energy and nutrients. The arrows indicate the flow of energy.
Food web	Many overlapping food chains in an ecosystem
Energy pyramid	Shows the amount of energy that moves from one feeding level to another in a food web.
Photosynthesis	Set of chemical reactions plants use to turn light, water and nutrients into oxygen and energy, in the form of sugars.
Chlorophyll	Absorbs light
Autotroph	An organism that makes its own food
Heterotroph	An organism that has to get its energy from another source.
Carnivores	Eat only animals
Scavenger	A carnivore that feeds on the bodies of dead organisms
Herbivore	Consumers that only eat plants
Omnivore	Consumer that eats both plants and animals.
Parasitism	A relationship that involves one organism living with, on, or inside another organism
Mutualism	A relationship in which both species benefit
Symbiosis	Any relationship in which two species live closely together
Commensalism	A relationship in which one species benefits and the other species is neither helped nor harmed.

Created by: user-1979073

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