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

Parts of habitat that are or were once alive

No living parts of an organisms habitat

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

All the members of one living species 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 non living environment

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

How an organism obtains it’s food, the type of food the organisms eat, and what other organisms eat it

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

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

Is any relationship in which two species live close together

Is a relationship in which one species benefits and the other species is neither helped nor harmed

Is a relationship in which both species benefit

Is a relationship that involved one organism living with, on, or inside another organism harming it

An organism that can make its own food

Obtain energy by feeding on other organisms

Break down biotic wastes and dead organisms

Is a series of events in which one organism eats another and obtains energy

Consists of many overlapping food chains

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

Is the set of chemical reactions plants use to turn light into water and nutrients into oxygen and energy

An organism that makes its own food

An organism that has to get its food from a source

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

The number of individuals in an area of specific size

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Ecosystems

Term	Definition
Organism	Living thing
Habitat	An environment that provides the things a specific organism needs to live, grow and reproduce
Biotic factor	Parts of habitat that are or were once alive
Abiotic factor	No living parts of an organisms habitat
Species	A group of organisms that can mate with each other and produce offspring
Population	All the members of one living species 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 non living environment
Ecology	The study of how organisms interact with each other and with their environment
Niche	How an organism obtains it’s food, the type of food the organisms eat, and what other organisms eat it
Competition	The struggle between organisms to survive as they use the same limited resources
Predation	An interaction in which one organism kills another for food or nutrients
Symbiosis	Is any relationship in which two species live close together
Commensalism	Is a relationship in which one species benefits and the other species is neither helped nor harmed
Mutualism	Is a relationship in which both species benefit
Parasitism	Is a relationship that involved one organism living with, on, or inside another organism harming it
Producer	An organism that can make its own food
consumer	Obtain energy by feeding on other organisms
Decomposer	Break down biotic wastes and dead organisms
Food chain	Is a series of events in which one organism eats another and obtains energy
Food web	Consists of many overlapping food chains
Energy pyramid	Shows the amount of energy that moves from feeding one level to another in a food web
Photosynthesis	Is the set of chemical reactions plants use to turn light into water and nutrients into oxygen and energy
Chlorophyll	Absorbs light
Autotroph	An organism that makes its own food
Heterotroph	An organism that has to get its food from a source
Limiting factor	An environmental factor that causes a population to stop growing or to decrease in size
Density	The number of individuals in an area of specific size

Created by: user-1979337

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