You are presented with the question "what causes iron in rocks to oxidize?" and the following answer choices: 
- 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

Now knowing that chemical weathering causes iron in rock to oxidize and chemical weathering is the chemical disintigration of rocks, choose the best answer.


 

    chemical disintegration     