To solve the question regarding the classification of yeasts, molds, and mushrooms in the forest ecosystem, we can follow these steps:
### Step-by-Step Solution:
1. **Understanding the Ecosystem Structure**:
- In any ecosystem, organisms are categorized based on their role in the food chain. The main categories are producers, consumers, and decomposers.
2. **Identifying Producers**:
- Producers are typically plants that convert sunlight into energy through photosynthesis. In the forest ecosystem, these are the trees and other green plants.
3. **Identifying Consumers**:
- Consumers are organisms that cannot produce their own food and rely on other organisms for energy. They are further classified into primary consumers (herbivores), secondary consumers (carnivores that eat herbivores), and tertiary consumers (top predators).
4. **Identifying Decomposers**:
- Decomposers are organisms that break down dead organic material and waste products. They play a crucial role in recycling nutrients back into the ecosystem.
5. **Classifying Yeasts, Molds, and Mushrooms**:
- Yeasts, molds, and mushrooms are all types of fungi. They thrive on dead and decaying matter, breaking it down and returning nutrients to the soil.
6. **Conclusion**:
- Therefore, in the forest ecosystem, yeasts, molds, and mushrooms are grouped as **decomposers**.
### Final Answer:
Yeasts, molds, and mushrooms are grouped as **decomposers** in the forest ecosystem.
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