Desaturate takes all of the color (saturation) out of a photo to make it Black & White.
You can desaturate an image in Photoshop by selecting the layer you want, and going to Image > Adjustments > Desaturate, or by pressing Shift+Ctrl+U on Windows, or Shift+Cmd+U on OS X. This will remove the color from an image or layer, and leave it in black and white. To have greater control over B/W conversion go to Layer > New Adjustment Layer > Black & White.
Sponge tool you can use to saturate or desaturate colors in image. When this tool is active you can set options in options bar (just below menus): Mode > choose Saturate or Desaturate, Flow is rate of saturation change and Vibrance is very useful option because it prevents colors to be oversaturated.
tired
The opposite would be to desaturate or unsaturate. For water, the opposite could be to dry.
Photoshop Elements is Photoshop but with less features, so Photoshop is better but it is professional level software. For home use or to get started Photoshop Elements is OK.
Photoshop 3.0
No, photoshop is not the law
what is photoshop?
Well Photoshop Elements is basically Photoshop, but that everything is already ready there. it's like easy version of Photoshop.
You can't. You need brushes photoshop 7 brushes for photoshop 7.0
By using photoshop of course
No Photoshop CS5 and Photoshop Elements are separate programs.