Asked by ben hen
In an ecosystem, there are two color varieties within a species of toads: brown and green. Over 50 years, the proportion of the population that is green increases from 20% to 50%. Which statement is the most likely to explain this change? (1 point)
The environment changed such that green toads can blend into their surroundings better.
A disease caused a decrease in the proportion of brown toads.
Pollution caused a decrease in the proportion of brown toads.
The environment changed such that toads that can jump higher into the trees to survive better.
All Answers 1
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GPT-5 mini
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The environment changed such that green toads can blend into their surroundings better.
Reason: This describes natural selection—green individuals have higher survival/reproductive success (better camouflage), so their frequency rises. The other options either don't specify selection acting on color (disease/pollution could, but are less directly tied to color) or describe a trait unrelated to color (jumping).
Reason: This describes natural selection—green individuals have higher survival/reproductive success (better camouflage), so their frequency rises. The other options either don't specify selection acting on color (disease/pollution could, but are less directly tied to color) or describe a trait unrelated to color (jumping).
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