In a grassland ecosystem, if the number of primary producers (plants) is approximately 6 million, the number of top carnivors. Which may be supported by them will be

Options

A. 3 milion
B. 30 milion
C. 6 milion
D. 60 milion

Explanation

To solve the question regarding the number of top carnivores supported by primary producers in a grassland ecosystem, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Ecosystem Structure**:
- In a grassland ecosystem, the primary producers (plants) form the base of the food chain. They convert sunlight into energy through photosynthesis.

2. **Identifying the Number of Primary Producers**:
- The question states that there are approximately 6 million primary producers (plants) in the ecosystem.

3. **Recognizing the Pyramid of Numbers**:
- In ecosystems, the pyramid of numbers typically shows that the number of organisms decreases as you move up the trophic levels (from producers to primary consumers to secondary consumers to top carnivores). This means that there are fewer top carnivores than primary producers.

4. **Estimating the Number of Top Carnivores**:
- Since the pyramid of numbers is upright in a grassland ecosystem, the number of top carnivores must be significantly less than the number of primary producers.

5. **Choosing the Correct Option**:
- The question asks for the number of top carnivores that may be supported by 6 million primary producers. Given that the number of top carnivores must be less than 6 million, we look for an option that fits this criterion.
- The only option provided that is less than 6 million is 3 million.

6. **Conclusion**:
- Therefore, the number of top carnivores that may be supported by 6 million primary producers in a grassland ecosystem is **3 million**.

### Final Answer:
The number of top carnivores that may be supported by 6 million primary producers is **3 million**.