They are alike because they are the simplest form of life and the carry genetic information.
Answer:
Overall Shape: Double Helix
Groups of Molecules Called: nucleotides
4 Nitrogenous Bases: Adenine-Thymine / Guanine-cytosine
Chargaff's rules: A=T, C=G
Backbone: Phosphate and deoxyribose sugar
Bonds: Hydrogen Bonds between base pairs
D Because the law of superposition the younger rocks are ontop of the older rocks
For prey: it's used for hiding from predators
For predators: it's used to sneak and pounce on the prey
