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Algae Diversity By Stella Ju Endrino and Brittany Porter Interpreting a graph: Examine the graph below, then answer the questions: Speed of Nitrogen Removal** Nitrogen Pollution Removal vs Number of Species of Algae 0.6 0.5 0.4 0.3 0.2 0.1 0 0 2 4 6 8 10 Number of Algae Species ** Speed of nitrogen removal, measured in micrograms (mass) per square centimeter per hour (mcg/cm 2/hr) 1. How quickly is nitrogen removed with one species? ______ With 2 species? _________ With 4 species?_________ With 6 Species?_________ With 8 Species?_________ 2. How does species number affect the rate of nitrogen removal? __________________________________________________________ 3. If we want to have less nitrogen in water or cleaner water, what do these data suggest for us to do? __________________________________________________________ 4. Why does a biodiverse community of algae keep the water clean? __________________________________________________________ 5. How else might biodiversity keep an ecosystem intact? __________________________________________________________