Is it possible that productivity and diversity of a natural community remain constant over a time period of, say one hundred years ?

Explanation

### Step-by-Step Solution

1. **Understanding Ecosystems**: Begin by recognizing that an ecosystem is a structural and functional unit of nature where various species coexist, forming a biological community.

2. **Stability in Ecosystems**: A stable ecosystem exhibits certain characteristics such as resistance to environmental disturbances and resilience. Resistance means that the ecosystem can maintain its integrity despite unfavorable conditions, while resilience indicates that it can recover after disturbances.

3. **Productivity in Stable Ecosystems**: In a stable ecosystem, productivity tends to remain fairly constant over time. This means that the amount of biomass produced does not fluctuate significantly from year to year, indicating a level of stability in the ecosystem.

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