(1) (https://explorable.com/independent-variable)
(2) (http://www.sciencebuddies.org/science-fair-projects/project_variables.shtml)
(3) (http://chemistry.about.com/od/introductiontochemistry/a/What-Is-An-Experiment.htm)
Experiments have often allowed us to see that principles are right. I have read in our chapters, that in speaking about principles strictly dealing with Biology as the subject, there a few different ‘Principles of Biology.’ They are as follows: cell theory, gene theory, evolution, homeostasis, and thermodynamics. I am sure that a lot, if not all, of these principles ring a bell to you, as we reviewed almost all of them during the first few chapters this week. A belief is a more personal. It has a lot to do with a persons attitude