C. Experimental
Explanation - The cause and effect of a process would be studied in experimental investigations. However, in descriptive studies, relationship between the factors are not studies rather the detail of the process is studied. In comparative investigation, several factors are compared and its effects are analyzed.
In experimental investigations, experiments are carried out based on the hypothesis and then it is validated accordingly. Validation is a must to prove and disprove the hypothesis. Therefore, experimental data and hypothesis are related.
The part of the experiment in which the experimental factor has been removed is referred to as <span>the independent variable. </span>The dependent variable<span> is the element which is being measured in an experiment or evaluated in a mathematical equation.</span>
Explanation:
C. Eubacteria and Archaebacteria
Well, DNA contains the hereditary information in the form of sequences of nucleotides which categorize as genes, that provide the information for synthesis of structural, functional and various other proteins that in combination and or in other ways determine an organism's complex traits. The phenotype of the said organism.
