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Understanding Ecosystems: Biotic and Abiotic Factors in Natural Selection

Explore the intricate relationships between living organisms and their environments in ecosystems. This chapter delves into biotic and abiotic factors, examining how certain traits and behaviors enhance survival and reproduction through natural selection. Discover the levels of organization within ecosystems and learn about coevolution, artificial selection, and resistance in species interactions. By understanding these concepts, we gain insight into the dynamic nature of life on Earth and the evolutionary processes that shape biodiversity.

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Understanding Ecosystems: Biotic and Abiotic Factors in Natural Selection

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  1. Chapter 4 Review

  2. Ecosystem or Not YES YES YES Lake Irene Coral reef Oak forest NO YES YES Ocean Vacant lot Utility pole

  3. Which organisms most likely belong to the same species? People at a football game Bacteria in your stomach Birds in a forest Organisms in a pond

  4. TRUE OR FALSE True True False True

  5. Biotic vs. Abiotic Factors Living components Non-living components BIOTIC ABIOTIC bacteria soil A dead fish temperature octopus sunlight Mr. Feeny rock Soil Temperature bacteria sunlight A dead fish octopus rock Mr. Feeny

  6. Levels of Organization organism population community ecosystem

  7. Evolution by Natural Selection • Organisms are more likely to survive because they: • Have certain physical ____________________ • ________________ certain physical traits • Engage in certain ________________________ traits lack behaviors T O D P A N T A I A Reproduction ADAPTATION Must happen for evolution to occur An inherited trait that increases an organism’s chance of survival & reproduction in a certain environment

  8. German shepherds are a breed of dog that exist because of… coevolution Artificial selection resistance Natural selection

  9. Two species changing genetically in response to long-term interactions with each other is… coevolution Artificial selection resistance Natural selection

  10. If an insect can no longer be killed by a particular insecticide, it has developed… coevolution Artificial selection resistance Natural selection

  11. Kingdoms ofLiving Things

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