Solution

Presence of air (Oxygen) and water

PREVENTION 

  • Oiling
  • Galvanizing
  • Greasing
  • Painting
  • Electro planting
  • Cathodic protection
SEE ALSO  State ONE role each of the following in digestion: i. Teeth ii. Tongue iii. Saliva - NABTEB QUESTION

Copyright warnings! Do not copy.