a
due to the comedy of the Earth and beautiful hydration of the earth beneath
I would say the nucleotides
Cytosine
Guanine
Adenine
Thymine
Four laws or principles are involved in the study of stratigraphy are:
1. Principle of original horizontality
2. Law of superposition
3. Law of crosscutting relationships
4. Principle of Lateral Continuity
The answer is Common ancestry