Exfoliation or flaking of rocks due to expansion in extremely high daytime temperatures with contraction in extremely low night time temperatures is a form of:

a) erosion

b) physical weathering

c) chemical weathering

post-impressionism is a predominantly french art movement that developed roughly between 1886 and 1905, from the last impressionist exhibition to the birth of fauvism. post-impressionism emerged as a reaction against impressionists' concern for the naturalistic depiction of light and colour.

explanation: