Question

what are two ways layers can be used in adobe photoshop? they can be duplicated they can be hidden or shown at will they expand the canvas they can add libraries of pre - established colors to choose from they can help move content

Explanation:

In Adobe Photoshop, layers can be duplicated to create copies for edits or variations. Also, they can be hidden or shown to manage visibility of different elements in the composition. Layers don't expand the canvas directly, don't add color - libraries, and aren't mainly for moving content (move tool is for that).

Answer:

They can be duplicated, They can be hidden or shown at will