beacause of the gravity of the earth and the satilliate .
because of it's oxidation
Because of Iron Oxide
Traditionaly aluminum alloys are used for this however there may be a trend developing in some non metalic fibrous materials.
A fallen [dead] tree does not rust. Rust is a term specifically applying to the oxidation of Iron and some compounds of Iron. The breakdown [biodecompositon] of trees and other plant materials is accomplished by the action of living microbial "critters" that eat and digest the plant materials resulting in different compounds.
Some objects are not attracted by magnets because they are not metalic. If the Magnet just attracts metalic minerals, definitely only metalic are attracted and not non-metalic..
salt!
Rust, Iron is quite reactive in that manner, so it would rust
No, rust is not an insulator. Rust is a form of iron oxide that is a poor conductor of electricity, but it is not a true insulator. It can still conduct electricity to some extent due to the presence of iron in its composition.
With the exception of iron , no metals rust. Rust is the oxide of iron. However, most metals do form oxides. Notably Gold and Platinum do not readily form oxides.
Most likely some other object has dripped rust onto the copper, which can be removed. Copper does not rust, but it does form a green patina over time.
Iron oxide comes in but one form: rust. There is no list for it.
Red rust Iron(III) oxide, is written Fe2O3Black rust, Iron(II) oxide, is FeOA contributor, below, offers that rust can be hydrated with some number of waters,ANS2:the formula for rust is Fe2O3.xH2Owhere x is a variable as we do not know that with what amount of water will iron react and will form rust