Chemical weathering causes iron in rock to oxidize, and chemical weathering is the chemical disintigration of rocks. Given these facts, what causes iron in rocks to oxidize among the following options:
- a tree falling
 - oxidation reaction
 - exposure to cold
 - chemical disintegration
 - hydrogen and oxygen
 - basic building blocks of life
 - fissures of hot, acidic water
 - flow of electrons


 

    chemical disintegration     