Which of the following is correctly arranged from the lowest trophic level to the highest trophic level? Bacteria, frog, eagle mushroom. Algae, deer, wolf, hawk. Grass, mouse, snake, eagle. Grass, bass, minnow, snake. Tiger, bear, lion, ostrich.

The correct answer is **Grass, mouse, snake, eagle.**<br /><br />Here's why:<br /><br />* **Trophic levels** represent the position an organism occupies in a food chain. They describe how energy flows through an ecosystem.<br /><br />* **Producers (Level 1):** These are organisms that create their own food, like plants and algae. Grass is a producer.<br /><br />* **Primary Consumers (Level 2):** These are herbivores that eat producers. Mice eat grass.<br /><br />* **Secondary Consumers (Level 3):** These are carnivores that eat primary consumers. Snakes eat mice.<br /><br />* **Tertiary Consumers (Level 4):** These are carnivores that eat secondary consumers. Eagles eat snakes.<br /><br />The other options are incorrect because they don't represent a proper flow of energy through a food chain. They mix up the order of predator and prey relationships or include organisms that don't fit the sequence.<br />