Ch 3 Vocabulary

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Across
  1. 3. small organisms that drift and float in the waters of the photic zone
  2. 5. factor any biotic or abiotic factor that restricts the existence, numbers, reproduction, or distribution of organisms
  3. 6. a group of ecosystems with the same climax communities
  4. 7. succession sequence of changes that take place after a community is disrupted by natural disasters or human action
Down
  1. 1. the orderly, natural changes that take place in the communities of an ecosystem
  2. 2. the ability of an organism to withstand changes in biotic and abiotic environmental factors
  3. 3. succession colonization of barren land by pioneer species
  4. 4. community a stable community that undergoes little or no change