The selective pressure will determine what happens to each of the groups of snakes.
What is selective pressure?
The question is incomplete but I will try to help the much I can. The term selective pressure refers to a situation in which some organisms tend to produce greater number of offspring than can be supported by the natural environment leading to the death of some of the species.
Hence, the fate of each of the groups of snakes depends on the selective pressure exerted by each specie on the environment.
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