 Abiotic: nonliving parts  Biotic: living parts When these factors are altered in some way the ecosystem is affected.

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Presentation transcript:

 Abiotic: nonliving parts  Biotic: living parts When these factors are altered in some way the ecosystem is affected.

 Water  Temperature  Light  Space  Salinity nonliving

 Food supply  Symbiotic interactions (parasitism, commensalism, mutualism)  Competition  Predation (predator/prey relationships) living

 Catastrophic events  Human Impact

 Volcanic eruption  Flood  Drought  Earthquake  Climate Change  Meteorites  Wildfires

 Deforestation (habitat destruction)  Global warming (gradual increase in the average temperature of the Earth's atmosphere and its oceans)  Pollution  Over fishing/hunting POSITIVE IMPACT: Gradual recovery of some species.

 A change that is believed to be permanently changing the Earth’s climate forever.  The increased volumes of carbon dioxide and other greenhouse gases released by the burning of fossil fuels, land clearing, agriculture, and other human activities, are believed to be the primary sources of the global warming that has occurred over the past 50 years.  Changes resulting from global warming may include rising sea levels due to the melting of the polar ice caps, as well as an increase in occurrence and severity of storms and other severe weather events.