Biological systems - PowerPoint PPT Presentation

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Biological systems

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Biological systems

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  1. Ecosystems

  2. What is Ecology? • Ecology is the study of relationships between living things and between living things and their environment.

  3. What is an ecosystem? • Ecosystem is a system of living things that interact with each other and with the physical world. • A Biome is a collection of related ecosystems.

  4. Desert Rainforest Ocean Taiga Tundra Chaparral Grassland Temperate Forrest Main Ecosystems:

  5. Green:Grassland Purple: Taiga Orange:Tundra Black:Temperate Forrest Yellow:Desert Brown:Chapparal White:Ocean

  6. However…….. • An ecosystem can be as large as the Sahara Desert, or as small as a puddle!!! • Ecosystems are more than just the organisms they contain. Geography,weather,climate and geologic factors also influence the interactions within an ecosystem.

  7. Abiotic Factors • Are nonliving physical factors of an environment. • Abiotoic Factors include amount of water and oxygen, temperature, amount of sunlight and water pressure.

  8. YOU TRY!!! • List three more examples of Abiotic Factors:

  9. Biotic Factors • Are the living, physical factors of an environment. • Examples of Biotic Factors are parasitism, disease and predation.

  10. Balance • Ecosystems will fail if they do not remain in balance. • No community can carry more organisms than its food, water and shelter can accommodate.

  11. How do they stay balanced? • To succeed in an ecosystem, plants and animals have special structures and behaviors called adaptations. • Ex) Chameleon Polar Bear Can you think of more examples of adaptation?

  12. This powerpoint was kindly donated to www.worldofteaching.com http://www.worldofteaching.com is home to over a thousand powerpoints submitted by teachers. This is a completely free site and requires no registration. Please visit and I hope it will help in your teaching.

  13. This powerpoint was kindly donated to www.worldofteaching.com http://www.worldofteaching.com is home to over a thousand powerpoints submitted by teachers. This is a completely free site and requires no registration. Please visit and I hope it will help in your teaching.