There aren't any disadvantages to use multiple layers. Multiple Layer Design is the point of using Photoshop. You can change elements of a project one piece at a time rather than single layer apps that once you make a enough changes you can never go back.
In Photoshop, you can create everything in a Non-Destructive manner and Multiple Layers is a foundational feature for that.
To perform masking in Photoshop, one should carefully be aware of the layers that they are working with. It is of vital importance to save multiple files in order to revert any changes.
you can browse your images in Bridge, add tags to find more quickly image you need, rename multiple files, open images in Photoshop Layers, create panorama, create .pdf files, web galery in Bridge.
I'm not sure what you exactly mean, but if you mean how to merge layers, select all layers (Using CTRL and left click), then right click on them and select merge layers.
Using blend modes. Blend modes U can access from top of LAYERS palette for example
If you are referring to an animated .gif file, they are created using layers of images that cycle in a loop. The layers must be edited individually. Try opening the "Layers" dialogue in Photoshop to view the different frames of the .gif.
By using photoshop of course
what are five advantages and five disavantages of using case structures to multiple alternative dicisions
Photoshop is an amazing program. I have been using it for many years and so far the only limit, as far as I am concerned, to the program is your imagination. I just finished a graphic project which contained 127 Layers. There really is no limit to the amount of layers you can use. You will need a decent computer to take full advantage of the program.
layers are independent pictures stacked one to another,you can make for every stroke independent layer,and if there is something you did wrong or disliked you can change or simply delete layer and everything on layer will gone,or you can change colors for that layer independent from other layers and strokes
In Photoshop using layers, U can put two images on same layer or on two separate layers.
The disadvantage is that , gif is better
In Photoshop, layers are like transparent sheets stacked on top of each other, allowing artists to work on different elements of a painting independently. Each layer can contain different content, such as colors, textures, or effects, and can be edited, moved, or deleted without affecting other layers. This flexibility enables non-destructive editing, making it easier to experiment with designs and adjust elements without altering the entire artwork. Additionally, layers can be organized, grouped, and blended using various modes to achieve complex visual effects.