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?
Choices:
the interaction between abiotic factors
the effects of chemical weathering
the process of deposition
the effects of abrasion
Answer: B