Water. Salt accelerates the process. To stop things rusting keep it dry of use paint or grease.
From three primary fungus species belonging to the Pucciniaceae family. Puccinia triticina causes 'black rust', P.recondita causes 'brown rust' and P.sriiformis causes 'yellow rust'.
Things rust in salt water because salt is a catalyst for the oxidation process that causes rust. When salt dissolves in water, it forms an electrolyte solution that accelerates the flow of electrons between the metal and the surrounding environment, leading to the formation of rust more quickly than in fresh water.
The saltwater air causes things to rust faster than non-saltwater air.
oxygen causes iron to rust
Things do not rust as quickly in Antarctica because the extremely low temperatures and lack of moisture inhibit the oxidation process that causes rust to form. The cold, dry conditions slow down the chemical reaction, preventing the exposure of metal surfaces to water and oxygen that are necessary for rust to develop.
dirt
They can, but you have to understand that magnetism and oxidation (the process that causes rust) are unrelated.
oxygen causes metal to rust oxidate
There is nothing good about rust.
There are various chemicals that make things rust and a good example is muriatic acid. Rust occurs when iron is oxidized.
When iron mixes with oxygen, it causes iron oxide, commonly known as rust. Therefore it causes the rock to "rust".
Rust is cause by the oxidation of Iron. Basically, when Iron reacts with Oxygen, Rust is fromed. 2Fe2 + 3O2 ---> 2Fe2O3 (Rust) For this reason, it is only things made out of Iron that can rust. I hope I helped! :)