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Answer:

Corrosion is a natural process of slow and gradual destruction of metals due to reactions to their environment.

In the case of MV Montenegro, the salt from the sea, the water from the sea and precipitation, the oxygen in the air, and the iron or steel used in the construction of the passenger ship all react together to turn the iron into rust. The hydrogen atoms that are in the water molecules can combine with other elements to form acids, which will eat away upper layers of paint and metal and eventually cause more metal to be exposed for destruction. If chloride ions are present, as is the case with salt in seawater, the corrosion is likely to occur more quickly. Also, the oxygen atoms combine with metallic atoms to form the destructive oxide compound. As the atoms combine, they weaken the metal, making the metallic structure brittle and crumbly as we see in rust.

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