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Interaction Among Living Things

Interaction Among Living Things. Adapting to Environment 1. Natural Selection 2. Adaptations 3. Niche Three types of interactions among organisms 1. Competition 2. Predation a. Predation and population b . adaptations 3. Symbiosis a. mutualism b . commensalism c . Parasitism.

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Interaction Among Living Things

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  1. Interaction Among Living Things Adapting to Environment 1. Natural Selection 2. Adaptations 3. Niche Three types of interactions among organisms 1. Competition 2. Predation a. Predation and population b. adaptations 3. Symbiosis a. mutualism b. commensalism c. Parasitism

  2. Interaction Among Living Things Adapting to Environment 1. Natural Selection 2. Adaptations 3. Niche Three types of interactions among organisms 1. Competition 2. Predation a. Predation and population b. adaptations 3. Symbiosis a. mutualism b. commensalism c. Parasitism

  3. Adapting to Environment • Natural Selection Process by which individuals that are best suited for an environment pass on their unique characteristics to their offspring

  4. Natural Selection

  5. Natural Selection has no intentions or senses; it cannot sense what a species “needs.” If a population happens to have the genetic variation that allows some individuals to survive a particular challenge better than others, then those individuals will have more offspring in the next generation, and the population will evolve. If that genetic variation is not in the population, the population may still survive (but not evolve much) or it may die out. But it will not be granted what it “needs” by natural selection.

  6. Interaction Among Living Things Adapting to Environment 1. Natural Selection 2. Adaptations 3. Niche Three types of interactions among organisms 1. Competition 2. Predation a. Predation and population b. adaptations 3. Symbiosis a. mutualism b. commensalism c. Parasitism

  7. Adapting to Envirionment • Adaptations Behaviors and physical characteristics that help individuals live successfully in their environments

  8. Adaptations

  9. Adaptations

  10. Interaction Among Living Things Adapting to Environment 1. Natural Selection 2. Adaptations 3. Niche Three types of interactions among organisms 1. Competition 2. Predation a. Predation and population b. adaptations 3. Symbiosis a. mutualism b. commensalism c. Parasitism

  11. Adapting to Envirionment • Niche The role of an organism in its habitat

  12. Niche

  13. Niche

  14. Interaction Among Living Things Adapting to Environment 1. Natural Selection 2. Adaptations 3. Niche Three types of interactions among organisms 1. Competition 2. Predation a. Predation and population b. adaptations 3. Symbiosis a. mutualism b. commensalism c. Parasitism

  15. Three types of interactions among organisms • Competition The struggle between organisms to survive as they attempt to use the same limited resources.

  16. Competition

  17. Interaction Among Living Things Adapting to Environment 1. Natural Selection 2. Adaptations 3. Niche Three types of interactions among organisms 1. Competition 2. Predation a. Predation and population b. adaptations 3. Symbiosis a. mutualism b. commensalism c. Parasitism

  18. Three types of interactions among organisms • Predation An interaction in which one organism kills another organism for food.

  19. Predation

  20. Interaction Among Living Things Adapting to Environment 1. Natural Selection 2. Adaptations 3. Niche Three types of interactions among organisms 1. Competition 2. Predation a. Predation and population b. adaptations 3. Symbiosis a. mutualism b. commensalism c. Parasitism

  21. Predation • Effect of Predation on Population Size If death rate of prey is greater than birth rate then prey population falls. If prey population falls then predator population falls. Both population rise and fall in related cycles.

  22. Predation

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