Q: Fact 1: Specialization occurs when competing species evolve different adaptations. Fact 2: Most species are highly specialized for their environments and evolve as the environments change. Given the two facts above, specialization occurs when competing creatures evolve as the what?

Possible answers: [i] habitats grow [ii] salamanders [iii] animals develop [iv] times change [v] It helps them survive [vi] principals of aerodynamics [vii] environments change [viii] remains of prehistoric life
The answer is:
[vii]