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

Parts of a habitat that are or once alive.

Non living parts of an organisms habitat.

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

All the members of one species living in a particular area.

All the different populations that live together in an area.

The community of organisms that lives in a particular area, along with the nonliving environment.

The study of how organisms interact with each other and their environment.

The number of individuals in an area of a specific size.

An environment factor that causes a population to stop growing or to decrease in size.

The largest population that an area can support.

An organism that can make its own food.

Contains energy by feeding on other organisms.

Break down biotic waste and dead organisms.

A series of events in which one organism eats another and obtains energy and nutrients.

Consists of many overlapping food chains in an ecosystem.

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

The set of chemical reactions plants use to turn light, water, and nutrients into oxygen and energy, in forms of sugar.

An organism that makes its own food.

An organism that has to get its food from a source- and is unable to make its own food.-

The role of an organism in its habitat.

The struggle between organisms to survive as they use the same limited resources.

One organism kills another for food or nutrients.

Any relationship in which two species live closely together.

A relationship in which one species benefits another species.

A relationship in which both species benefit.

A relationship that involves one organism living with, on, or inside another organism and harming it.

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Ecosystem

Term	Definition
Organism	A living thing.
Habitat	An environment that provides the things a special organism needs to live, grow and reproduce.
Biotic factor	Parts of a habitat that are or once alive.
Abiotic factor	Non living parts of an organisms habitat.
Species	A group of organisms that can mate with each other and reproduce offspring.
Population	All the members of one species living in a particular area.
Community	All the different populations that live together in an area.
Ecosystem	The community of organisms that lives in a particular area, along with the nonliving environment.
Ecology	The study of how organisms interact with each other and their environment.
Population density	The number of individuals in an area of a specific size.
Limiting factor	An environment factor that causes a population to stop growing or to decrease in size.
Carrying capacity	The largest population that an area can support.
Producer	An organism that can make its own food.
Consumer	Contains energy by feeding on other organisms.
Decomposers	Break down biotic waste and dead organisms.
Food chain	A series of events in which one organism eats another and obtains energy and nutrients.
Food web	Consists of 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	The set of chemical reactions plants use to turn light, water, and nutrients into oxygen and energy, in forms of sugar.
Chlorophyll	Absorbs light.
Autotroph	An organism that makes its own food.
Heterotroph	An organism that has to get its food from a source- and is unable to make its own food.-
Niche	The role of an organism in its habitat.
Competition	The struggle between organisms to survive as they use the same limited resources.
Predation	One organism kills another for food or nutrients.
Symbiosis	Any relationship in which two species live closely together.
Commensalism	A relationship in which one species benefits another species.
Mutualism	A relationship in which both species benefit.
Parasitism	A relationship that involves one organism living with, on, or inside another organism and harming it.

Created by: user-1978845

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