types of succession

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Across
  1. 2. which usually happens after a natural disaster
  2. 8. A system in which the forces are balanced
  3. 9. one of the pioneer plants in primary succession
  4. 10. which creates a new environment out of nothing
Down
  1. 1. a process that limits population size
  2. 3. when an ecosystem is at its height
  3. 4. the process in which ecosystems develop
  4. 5. the species that is the first to settle a land
  5. 6. usually the first pioneer animals
  6. 7. the usual cause for secondary succession