Causes of CorrosionMetal corrodes when it reacts with ANOTHER substance such as oxygen, hydrogen, an electrical current or even dirt and bacteria. Corrosion can also happen when metals like steel are placed under too much stress causing the material to crack.What are the MAIN causes of corrosion?A- Uncontrolled humidity and corrosive gases are the primary causes of corrosion in industrial environments. Condensation of water vapor on metal surfaces and corrosive gases such as ammonia, chlorine, hydrogen oxides, sulfur oxides, etc. can result in corrosion of electronic equipment, rusty corners, and corroded parts.Corrosion is a natural process that converts a refined metal into a more chemically stable form such as oxide, hydroxide, or sulfide. It is the gradual destruction of materials (usually a metal) by chemical and/or electrochemical reaction with their ENVIRONMENT. Corrosion engineering is the field dedicated to controlling and preventing corrosion.Rust, the most familiar example of corrosionVolcanic gases have accelerated the extensive corrosion of this abandoned mining machinery, rendering it almost unrecognizableCorrosion on exposed metal, including a bolt and nutSide VIEW of CROW Hall Railway Bridge, north of Preston, Lancashire rustingIn the most common use of the word, this means electrochemical oxidation of metal in reaction with an oxidant such as oxygen or sulfates. Rusting, the formation of iron oxides, is a well-known example of electrochemical corrosion. This type of damage typically produces oxide(s) or salt(s) of the original metal and results in a distinctive orange colouration. Corrosion can also occur in materials other than metals, such as ceramics or polymers, although in this context, the term "degradation" is more common. Corrosion degrades the useful properties of materials and structures including strength, appearance and permeability to liquids and gases.This was The right answer please mark as brainliest answer plz