Galvanic Series in Soil

Fill in each of the blanks with one suggested keyword visible by 'clicking' on the arrow button besides each blank. The materials referred to should be organized by decreasing order of nobility, the first one being the least prone to suffer corrosion damage. 'Click' on the check button to assess your answers.

No 1: Not many things can come close
No 2: Can endure a lot of use and abuse
No 3: That scale is in fact protective
No 4: An excellent choice
No 5: A long history and many stories to tell
No 6: Much used, but watch out!
No 7: Can't stand it
No 8: Sacrifice itself readily
No 9: Makes a perfect anode

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