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1. What kind of symbiosis would barnacles on a whale be? a. parasitism b. commensalism c. mutualism

2. What is the most damaging type of forest fire? a. crown fire b. ground fire c. surface fire

3. An aquifer is... a. a type of insect b. a mammal native to south america c. an exotic bird d. a porous layer of rock that holds water

4. The most damaging type of landscape disturbance is... a. fire b. drought c. timber harvesting d. cultivation e. surface mining

5. What is it called when the seeds stay in a tree's cones until after a crown fire? a. serotiny b. mutiny c. allelopathy d. laziness

6. Explain the differences between primary and secondary succession.