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Abiotic and Biotic Factors

Abiotic and Biotic Factors. Biotic Factor. Bio means life. Biology – study of life Biosphere – life ball So, a BIOTIC FACTOR is a living part of an ecosystem!. What are the BIOTIC FACTORS in this ecosystem?. Abiotic Factor. A means not / without Anonymous – without a name

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Abiotic and Biotic Factors

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  1. Abiotic and Biotic Factors

  2. Biotic Factor • Biomeans life. • Biology – study of life • Biosphere – life ball • So, a BIOTIC FACTOR is a living part of an ecosystem!

  3. What are the BIOTIC FACTORS in this ecosystem?

  4. Abiotic Factor • Ameans not / without • Anonymous – without a name • Atheist – not believing in God • So, an ABIOTIC FACTOR is a non-living part of an ecosystem

  5. What are the ABIOTIC FACTORS in this ecosystem?

  6. Abiotic and Biotic factors can also change an ecosystem • How can ABIOTIC FACTORS change? • Climate: Temperature, humidity, weather can all change from season to season or over many years • Water: Floods and droughts can change the amount of water • Soil: Soil can be eroded, washed away or changed in other ways • How can BIOTIC FACTORS change? • A new species can enter an ecosystem • A population can grow in number, sometimes dramatically • An existing species can leave, migrate, or go extinct

  7. Unintended Consequences • An unintended consequence is something you didn’t expect to happen. • When a new ABIOTIC or BIOTIC factors are introduced into an ecosystem, there are often many unintended consequences. Examples: Sinking of ships in shallow waters Prohibition of alcohol in 1920’s

  8. Invasive Species • An invasive species is an organism from a different part of the world that has been introduced into the ecosystem. • Invasive species are often very successful in their new environment. They do so well that they push out other organisms and disrupt the ecosystem • Invasive species are usually introduced into a new environment by humans, either by accident or on purpose.

  9. Pop Quiz • Is an invasive species an Abiotic or a Biotic factor? Why? • Was the DDT that killed the California Condors abiotic or biotic?

  10. The Rocky Mountain Pine Beetle • http://video.nytimes.com/video/2008/11/18/science/1194833211431/america-s-disappearing-forests.html?scp=1

  11. The Rocky Mountain Pine Beetle • What is an epidemic? • Which tree does the Pine Beetle attack? • What are two causes for the Pine Beetle outbreak? • Name 2 unintended consequences of the Pine Beetle epidemic?

  12. Do you think that the Pine Beetle epidemic is caused by ABIOTIC or BIOTIC factors?

  13. Pair and Share • Read your article and answer the questions on your activity sheet. • Then, summarize your article to your partner. • Write down some notes about the invasive species your partner read about • Finally, brainstorm some ways of stopping these invasive species with your partner

  14. Exit Slip • 1. What is an invasive species? Give an example. • 2. Explain the difference between an abiotic and a biotic factor. Give an example of each.

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