Unit 2

Shamaryee Dalton


SEV2 ; Students will demonstrate an understanding that the earth is one interconnected system.

A. Describe how Abiotic components ( water , air , and energy ) affect the biosphere .

B. Recognize and give examples of the hierarchy of the biological entitles of the biosphere (organisms , populations , communities , ecosystems , and biosphere ) .

C. Characterize the components that define a Biome . Abiotic Factors - to include precipitation , temperature and soils . Biotic factors - plant and animal adaptions that create success in that biome .

D. Characterize the componets that define fresh-water and marine systems . Abiotic factors - to include light , dissolved oxygen , phosphorus, nitrogen , ph and substrate . Biotic factors - plant and animal adaptions characteristics to that system .


Ecosystem - All of the organismsliving together with their physical enviorment .

Example : Oak forest .

Biotic factors - living part of ecosystem

Example : Animals

Abiotic factors - Nonliving part of ecosystem

Exanmple : Water or rocks

Habitat - Theplace a organism lives .

Example : Tree

Artifical selection - selective breeding of organisms by humans for specific characteristics .

Protists - One celled organisms and their many celled relatives .

Acid - Having the properties of an acid ph 1-7 .

Base - Ph 8-14 .

Food chain - series of steps in which organisms transfer energy by eating and being eaten .


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components of a biome


components of freshwater and marine ecosystems

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Dissolved oxygen

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Link for summary of ecology

Real world application