Why are you allowed to use the coarse adjustment when you focus the low power objective lens but not when you focus the high power objective lens?

which are post-impressionist paintings? check all that apply?

explanation:

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 color.

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the cost of mining is extremely low compared to the money earned from mining, creating income to improve the environment.