by Sandi Ackerman. .A rabbit's diet should be made up of good quality pellets, fresh hay, (alfalfa, timothy or oat), water, and fresh vegetables. Anything beyond that is a treat and should be given in limited quantities. Pellets should be fresh, and should be relatively high in fiber (18% minimum fiber).
Supplement. In scientific experiments, the use of controls allows to study one variable or factor at a time. It is, however, important that both the control and other (experimental) group(s) are exposed to the same conditions apart from the one variable under study.
Experimental variables are crucial to the scientific process; without them, the experiment is pointless. However, the controlled variables in any experiment are equally important. It is imperative for scientists to control everything in the experiment that they can, except for the variable that he is testing.