Corrosion is a big challenge in various fields, especially where metallic components are involved. 

answer the following and cite your references:

• What is corrosion?
• Why does corrosion occur?
• List at least five types of corrosion?
• Pick one type of corrosion you listed and do the following:
  • Explain its mechanism
  • Say where this type of corrosion is more likely to occur
  • Say what measures should be taken to prevent it
• List your references