the interaction between abiotic factors the effects of chemical weathering the process of deposition the effects of abrasion
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: A scientist was examining a large boulder that was covered with lichens (a combination of fungi and algae). He chipped a piece of the rock and placed it under a microscope. He observed that the surface of the rock was breaking down underneath the lichen. Which was the scientist most likely observing?
Possibilities:
- the interaction between abiotic factors
- the effects of chemical weathering
- the process of deposition
- the effects of abrasion

the effects of chemical weathering