Answer:
Grass - producers
Voles - Primary consumers
Foxes - Secondary consumers
Cougars and eagles - Tertiary consumers
Fungi - Decomposers
Step-by-step explanation:
Interaction between biotic and abiotic components constitutes the ecosystem. In an ecosystem, there are producers, consumers and decomposers. In the given group of organisms. Grasses are a producer as they synthesize food through photosynthesis. Voles eat plants are herbivores. They are primary consumers. Foxes feed on other animals, thus they are secondary consumers. Cougars and eagles are tertiary consumers. On the death of producer and different consumers decomposed by decomposers such as fungi. Thus, fungi are decomposers.