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1.1 Biotic and Abiotic Factors in Ecosystems

1.1 Biotic and Abiotic Factors in Ecosystems. (sec 2.1 pg 21-24). The study of how organisms interact with each other and with their physical environment is called ecology . For practical reasons, ecologists divide the environment into different levels:.

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1.1 Biotic and Abiotic Factors in Ecosystems

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  1. 1.1 Biotic and Abiotic Factors in Ecosystems (sec 2.1 pg 21-24)

  2. The study of how organisms interact with each other and with their physical environment is called ecology.

  3. For practical reasons, ecologists divide the environment into different levels:

  4. The environment is divided into different levels: • Level 1:organism = single living thing.

  5. The environment is divided into different levels: • Level 2:population = all of the organisms of the same species that share a habitat.

  6. The environment is divided into different levels: • Level 3:community = all of the different populations in a particular area that interact.

  7. The environment is divided into different levels:Level 4:ecosystem = includes the living community as well as the physical environment in which the organisms live

  8. The environment is divided into different levels: • Level 5:Biosphere = is the total area of Earth where living things are found.

  9. Each environment has two kinds of factors: • Abiotic = non-living factors • Biotic = living factors BIOTIC FACTORS ABIOTIC FACTORS

  10. A limiting factor is the most critical factor in determining the types of organisms that exist in an ecosystem. • Many organisms compete for the same limiting factor(s).

  11. Many ecosystems are in a state of dynamic equilibrium, where there is a balance between the abiotic and biotic factors and their connection to each other, but there is also continuous change. • Most ecosystems experience continuous change, but the overall system is still stable.

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