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

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 the members of one species living in a particular area.

All the different populations that live together.

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 with their environment.

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

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.

Obtains energy by feeding on other organisms.

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

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

Consists of many overlapping food chains.

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 form of sugar.

An organism that makes its own food.

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

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.

A relationship in which both species benefit.

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

How an organism obtains its food, the type of food the organism eats, and what other organisms eat it.

When two species share a niche.

An interaction in which one species benefits one organism kills another for food or nutrients.

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Ecosystems

Term	Definition
Organism	A living thing.
Habitat	An environment that provides the things a specific organism needs to live, grow, and reproduce.
Biotic factor	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 the members of one species living in a particular area.
Community	All the different populations that live together.
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 with their environment.
Population	All the members of one species living in a particular area.
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	Obtains energy by feeding on other organisms.
Decomposer	Break down biotic wastes and dead organisms, returning the raw materials to the ecosystem.
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.
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 form of sugar.
Chlorophyll	Absorbs light.
Autotroph	An organism that makes its own food.
Heterotroph	An organism that has to get its food from another source.
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.
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.
Niche	How an organism obtains its food, the type of food the organism eats, and what other organisms eat it.
Competition	When two species share a niche.
Predation	An interaction in which one species benefits one organism kills another for food or nutrients.

Created by: user-1979087

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