The Great Sphinx of Giza, located on the west bank of the Nile, is one of wonders of the world. Carved from the limestone bedrock it has lasted over 4000 years in this arid desert. However there has been some damage to it.
Looking at this picture which process(es) do you think was responsible?

a. mechanical weathering
b. chemical weathering
c. erosion
d. erosion and weathering