Question

1. choose the best answer.

a copper statue turning bluish - green is an example of
chemical weathering
bathymetry
superposition
physical weathering

Explanation:

Chemical weathering involves chemical reactions that change the composition of rocks or metals. When copper turns bluish - green, it is due to a chemical reaction (usually with oxygen, water, and carbon dioxide in the air) forming a new compound (like copper carbonate). Physical weathering only changes the physical form (e.g., breaking into smaller pieces without changing composition). Bathymetry is the study of underwater depth. Superposition is a principle in geology about the order of rock layers.

Answer:

chemical weathering