CBA 7.2 Review

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Across
  1. 6. these are the first organisms to colonize or populate an area
  2. 8. organisms composed of only one cell
  3. 9. the ecosystem can withstand disruptions from natural and human causes
  4. 11. organisms are composed of one or more cells, cells come from pre-existing cells, cells are the basic unit of structure and function
  5. 12. ability to maintain balance over time
  6. 13. cells that do not contain a nucleus or membrane bound organelles
  7. 14. this type of succession starts on soil after an ecosystem has been disturbed
  8. 15. the pioneer species of primary succession are ___ and mosses
Down
  1. 1. organisms that must eat other organisms to get energy
  2. 2. cells that contain a nucleus and membrane bound organelles
  3. 3. all the different kinds of life you'll find in one area—the variety of animals, plants, fungi, and even microorganisms like bacteria
  4. 4. this type of succession starts on bare rock, no soil
  5. 5. the number of different species in a specific area, along with the abundance of each species
  6. 7. organisms that make their own food
  7. 10. organisms made up of many cells