Operant chamber is
laboratory apparatus consisted of the response lever, electrified grid and food dispenser.
Operant chamber (also known as Skinner’s box) is a
typical laboratory chamber (apparatus) in which the behavior and learning
process of rats was examined. This chamber is mostly empty, it has a food
dispenser, response lever which gives food when it’s pressed and sometimes
electrical greed. With this chamber, Skinner has learned in his research that
rats firstly press the lever by mistake, but that begins to happen more and
more. After some time, rats learn that when they press the lever they get food
as a reward. At the other experiment, rat have learned the same way that when
they press the lever, the electrified grid is turned off.
171 km³ per year.
0.006% = 0.006/ 100 = 0.00006 ;
0.00006 * 2,850,000 km³ = 171 km³ per year.
'Horse Drawn Vehicles' were once the primary transportation method, and there were 3 involved animals, horses, mules, and oxen, although horses were the original go to for a carriage, due to fast movement, oxen soon became popular amoungst emigrants.
