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Which of the following is/are the processes that affect the corrosion behavior of metals by biological activity?

Which of the following is/are the processes that affect the corrosion behavior of metals by biological activity? Correct Answer By producing deposits, by influencing anodic, cathodic reactions and protective surface films

The process that affects the corrosion behavior of metals by biological activity are: i. By directly influencing anodic and cathodic reactions ii. By influencing protective surface films iii. By creating a corrosive environment iv. By producing deposits.

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