chapter 5 how ecosystems work

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Across
  1. 4. Organisms that get their food by breaking down dead organisms are called ____________________.
  2. 6. A lion is an example of a group of consumers called ____________________.
  3. 7. During primary succession, ____________________ often begin the process by breaking down the rocks into soil.
  4. 10. In the carbon cycle, the source of carbon for producers is the ____________________.
Down
  1. 1. A process in which energy from the sun is used to make sugar molecules is called _________________________.
  2. 2. Horses and cattle are ____________________ because they eat only plants.
  3. 3. Excessive use of ____________________ on lawns and gardens can affect the nitrogen and phosphorus cycles in nearby lakes and streams.
  4. 5. The ultimate source of energy for most organisms is the ___________________.
  5. 8. On new islands formed by volcanic activity, you will most likely find ____________________ succession.
  6. 9. Some natural disasters, such as ____________________, help some forest communities by allowing some trees to release their seeds, by clearing away deadwood, and by encouraging new growth.