A fertile area in a desert with a steady water supply

It is called an Oases.

Explanation:

An oasis is an area made fertile by a source of fresh water in an otherwise dry and arid region. (more than one oasis).

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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