- Acid produced by some trees can change the soil chemistry
- A change in soil chemistry is a kind of chemical weathering
- Therefore, some trees producing acid is an example of chemical weathering

Therefore, some trees producing acid is an example of chemical weathering
Question
The iron in iron-rich red soils may not be in a form that can be taken up by tree roots. As a result, leaves and needles may look yellow. Some trees release acids that convert iron in soil to a usable form. This change in soil chemistry is a type of which process?

Context
- Acid produced by some trees can change the soil chemistry 
- A change in soil chemistry is a kind of chemical weathering