1. COOPERATIVE INTERRELATOINSHIPS IN MISSOURI FORESTS

3. DESERT

4. LAKE

6. FOOD WEB

7. MANY DIFFERENT COMMUNITIES EXIST IN A SINGLE FOREST

12. LEECHES

15. Certain species of millipede and silverfish inhabit the nests of army ants and live by scavenging on the refuse of their hosts, but without affecting the ants.

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