Answer:
Plant ➜ Butterfly ➜ Frog ➜ Snake
Explanation:
Food chain is a way of representing a logical sequence of living beings that serve as food for each other, allowing a flow of energy through various trophic levels.
Each living being presents a trophic level, thus establishing a route of energy and organic matter that passes in decreasing amount from the lowest trophic to the highest trophic. These systems show how each living being is important in the ecosystem and the elimination of one of them can unbalance the entire ecosystem, affecting the food chain and energy transfer.
We can use the food chain as an example: Plant ➜ Butterfly ➜ Frog ➜ Snake. Where the plant serves as food and energy source for the butterfly, which serves as food and energy source for the frog, which in turn serves as food and energy source for the snake.
