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    Question

    Cyanobacteria is:

    A BGA Correct Answer Incorrect Answer
    B Azolla Correct Answer Incorrect Answer
    C Azotobacter Correct Answer Incorrect Answer
    D Rhizobium Correct Answer Incorrect Answer

    Solution

    Cyanobacteria (also called blue-green algae) are an ancient group of photosynthetic microbes that occur in most inland waters and that can have major effects on the water quality and functioning of aquatic ecosystems.

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