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)
O Pollution caused a decrease in the proportion of brown toads.
O The environment changed such that toads that can jump higher into the trees to survive better.
O The environment changed such that green toads can blend into their surroundings better.
O A disease caused a decrease in the proportion of brown toads.
1 answer
The most likely explanation for the increase in the proportion of green toads from 20% to 50% over 50 years is that the environment changed such that green toads can blend into their surroundings better. This would provide a survival advantage to the green toads, allowing them to reproduce and pass on their genes at a higher rate than the brown toads.