premise: behavioral adaptation has a positive impact on the population / the survival / the reproduction of a species / of individual organisms sent2: a behavior is a kind of characteristic sent3: something that animals require has a positive impact on that animal's survival sent4: an instinctive behavior is a kind of behavioral adaptation sent5: an instinctive behavior is a kind of inherited characteristic sent6: ash from a volcano is warm in temperature sent7: animals require warmth for survival sent8: an example of an inherited behavior is a bird building a nest sent9: a volcano changes the environment around it by covering the environment in ash.
hypothesis: heat from magma can change sedimentary rock into metamorphic rock