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