Ascientist is designing an investigation to study the impact of uv radiation present in high-altitude habitats on the population of mountain yellow-legged frog. what type population is most likely to be a control group for the study? mountain frogs in low-altitude habitats only mountain frogs in their natural high-altitude habitat mountain frogs in a lab setting exposed to uv rays from a sun lamp mountain frogs in a lab setting with no uv ray exposure

The correct answer is the mountain frogs in a lab setting with no UV rays exposure.  

The frog populations, which do not acquire the ultraviolet radiation would function as a good control group. In this case, as the influence of the radiation is the variable under examination, thus, a group that acquires no radiation would exhibit no variation, and thus, would function as a control group that could be compared against the frogs, which do receive the radiation.  

≅200-130 milions years ago pangea splited in 2 continents

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explanation:

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