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The building of a new highway results in pollution of a nearby lake ecosystem as runoff flows into the lake. The frogs in the lake seem to be especially susceptible to the effects of the pollutants; however, some of the frog population survives, and, over time, scientists determine that the frog population has evolved. Which of the following is NOT a requirement for evolution by natural selection to occur in the frog population?

Question

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 The building of a new highway results in pollution of a nearby lake ecosystem as runoff flows into the lake. The frogs in the lake seem to be especially susceptible to the effects of the pollutants; however, some of the frog population survives, and, over time, scientists determine that the frog population has evolved. Which of the following is NOT a requirement for evolution by natural selection to occur in the frog population?

AngeI · Answer

what are the choices?

kaylak · Answer

Frogs must be capable of producing more offspring than will be able to survive.
In order to evolve, individuals in the frog population must develop traits that make them resistant to the effects of the pollution.
Some frogs must possess beneficial traits that help them survive and reproduce.
Variations must occur naturally within the frog population

AngeI · Answer

I think it may be a or d but i am not to sure

kaylak · Answer

@Vocaloid

Vocaloid · Answer

evolution does not occur on the individual level (individual frogs do not just spontaneously get new characteristics, they get selected for over several generations)

Vocaloid · Answer

so my best guess would be b

kaylak · Answer

that makes sense doing a study guide one of 3 questions in each group will be on test lol