Hair is composed mainly of the protein keratin, with an inner layer containing melanin that gives our hair its natural colour. An outer layer, called the cuticle, protects the hair. Average rate of hair growth is 1cm a month. Speed of hair growth depends on genetics, age and hormone levels.
Ctrl+Alt+Down Arrow = Turns screen upside-down. Ctrl+Alt+Up Arrow = Turns screen rightside-up. Ctrl+Alt+Right Arrow = Turn screen once, clockwise. Ctrl+Alt+Left Arrow = Turns screen once, counter-clockwise.
Take a screen shot of part of the screen. 1  On keyboard press Command-Shift-4, then drag the cross-hair pointer to select the area to capture. 2  Continue to press the mouse button, release the keys. 3  When you are ready to take a screen shot, release the mouse button. 4  The screen shot is taken and it is saved as a file on the Desktop.