Question

producer. moving up the trophic levels, we reach the secondary consumer. the bird preys upon the primary consumer, the grasshopper. the flow of energy continues as the bird gains sustenance by consuming other organisms. finally, at the top of this food chain, we find the tertiary consumer, the fox. throughout this process, energy is transferred from one trophic level to the next, flowing to consumers. which organism is at the top of the food chain pictured? the sun fox grass

Explanation:

Step1: Identify trophic - level description

The text states "Finally, at the top of this food chain, we find the tertiary consumer, the fox."

Step2: Match with options

Among the options (the sun, fox, grass), the fox is the tertiary consumer and at the top of the food - chain as described.

Answer:

B. fox