Question

4.
What is the use of Layers ?​

Answer 1

Layers can play an important role in your post-production. You can separate parts of the image and edit them without affecting other parts of the image. Converting your image layers to a Smart Object allows you to move the new image around, edit it, and resize it without affecting the resolution of the original image.

Answer 2

Answer:

layers of which substance sorry to say but question is incomplete