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.
Unit 4 - Controlled Variable. In scientific investigations there are three types of variable. Key independent variable (what we change), dependent variable (what we measure) and the controlled variables (factors we control and ensure are the same each time we do the experiment).Controlled variables make sure that the experiment is a fair test.Controlled variables are... 1  all of the factors.ey independent variable (what we change), dependent variable (what we measure) and the controlled variables (factors we control and ensure are the same each time we do the experiment). Controlled variables make sure that the experiment is a fair test. Controlled variables are... 1  all of the factors.