Question

1. what is the correct order of trophic levels from bottom to top? a. primary consumer → secondary consumer → tertiary consumer → producer → decomposer b. producer → primary consumer → secondary consumer → tertiary consumer → decomposer c. producer → consumer → autotroph → heterotroph → decomposer

Explanation:

Trophic levels start with producers that make their own food through photosynthesis. Primary consumers eat producers, secondary consumers eat primary consumers, tertiary consumers eat secondary consumers, and decomposers break down dead organisms. This follows the sequence producer - primary consumer - secondary consumer - tertiary consumer - decomposer.

Answer:

B. producer → primary consumer → secondary consumer → tertiary consumer → decomposer