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    Question

    While most _______________of bioluminescence are

    harmless, experts caution that large blooms can potentially ___________oxygen in the water, affecting marine life. In the following sentences, there are two blanks. Find out the appropriate words for filling up the blanks:
    A forms, replenish Correct Answer Incorrect Answer
    B types, increase Correct Answer Incorrect Answer
    C cases, produce Correct Answer Incorrect Answer
    D instances, deplete Correct Answer Incorrect Answer
    E none of these Correct Answer Incorrect Answer

    Solution

    "Instances" is the correct choice for the first blank, as it refers to occurrences of bioluminescence. "Deplete" fits the second blank because large blooms can reduce the oxygen in the water, potentially harming marine life.

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