Rubber is mainly composed hydrogen and carbon atoms. Thus, it can be expected that the type of bonding that will be primarily present in its structure is covalent bonding as well as van der Waals forces amidst individual chains. Covalent bonding occurs when there is sharing of electron pairs between atoms. On the other hand, van der Waals interactions occur due to the closeness of the atoms.
The snakes nutrition is carnivores based. The frogs nutrition is also carnivores based (feeds on other animals), but in this situation the snake is the predator and the frog is the prey