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.
The scroll function on a laptop computer allows you to use the touch pad for vertical scrolling in the same way a mouse wheel works with the cursor on the screen. The touch pad on a laptop can scroll horizontally as well.