Question

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) Responses Pollution 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. The environment changed such that toads that can jump higher into the trees to survive better. A disease caused a decrease in the proportion of brown toads. A disease caused a decrease in the proportion of brown toads. The environment changed such that green toads can blend into their surroundings better.

Answer 1

The most likely statement to explain the change in the proportion of green toads from 20% to 50% over 50 years is: "The environment changed such that green toads can blend into their surroundings better."

This suggests that the green coloration may provide a survival advantage in a changing environment, possibly due to changes in habitat or climate that favor the green toads over the brown ones.