D - initiation - elongation - termination
The control variable in any experiment is designed in order to apply the same steps of the experiment but with no change happens in the observations.
In this experiment, the student tries to know the effect of solubility of different water-soluble salts (NaCl, CaCl2 and KCO3) on the melting point of the solution. All these salts dissolve in water and give some effect on the melting point except for the sand as the sand doesn't dissolve in water.
Answer:
3rd option
Explanation:
Eukaryotic cells have many chromosomes while most prokaryotic cells consist of just one circular chromosome.
