There are 1 to 2 called alleles
The lizards have to adapt to the environment to survive. The lizards may have always ate flies/lizards but once they reached the environment that produced opposite of their eating habits, they altered their eating habits. The lizards' adaptation will give them the ability to survive within the said environment that produce certain foods.
Answer: If enough evidence accumulates to support a hypothesis, it moves to the next step — known as a theory — in the scientific method and becomes accepted as a valid explanation of a phenomenon.
