Normally they will do this when they get too much direct sunlight, ferns are indirect light and shade lovers. The red rust normally happens as they get older, usually around winter time and isn't something to be worried about.
oxygen, rust is iron oxide
Iron will begin to rust after exposure to water. The reaction that happens to cause rust is due to the iron oxidizing.
Rust -Jeff
the type of liquid that causes a nail to rust is vinegar
in laymans terms, the salt causes erosion.
no, oxygen causes rust.
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'.
It's probably oxidation, not rust.
Rust is a reaction of iron oxidation in the presence of water.
oxygen causes iron to rust
dirt
oxygen, rust is iron oxide
They can, but you have to understand that magnetism and oxidation (the process that causes rust) are unrelated.
oxygen causes metal to rust oxidate
When iron mixes with oxygen, it causes iron oxide, commonly known as rust. Therefore it causes the rock to "rust".
Dry weather, like the desert. Moisture causes rust.
coke will make it rust faster