You are presented with the question "What does chemical weather cause iron to do?" and the following answer choices: 
- Change to rainbow colors
 - flow of electrons
 - contamination
 - Stay the same
 - It gets heated up
 - Plant growth is reduced
 - Change gender
 - Change color to brown

Now knowing that chemical weathering causes iron in rock to oxidize and iron oxides are produced that are red, orange, or brown in color, choose the best answer.


 

        Change color to brown 