Which one of the following strongly threatens biodiversity ?

Options

A. Destruction of natural habitats and vegetation and shifting cultivation
B. Inaccessible habitats in the Himalayas
C. Fragile ecosystems such as mangroves and wetland
D. Creation of biosphere reserves

Answer

To determine which option strongly threatens biodiversity, we can analyze the given choices step by step:

### Step 1: Understand the Options
The question provides several options that could potentially threaten biodiversity. We need to evaluate each one to see which has the greatest impact.

### Step 2: Evaluate Each Option
1. **Destruction of Natural Habitat, Vegetation, and Shifting Cultivation**:
- Destruction of natural habitats leads to loss of niches for various species, resulting in decreased species diversity.
- Loss of vegetation also contributes to this decline, as plants are crucial for supporting animal life and maintaining ecosystem balance.
- Shifting cultivation can lead to habitat degradation and fragmentation, further threatening biodiversity.

2. **Inaccessible Habitats in the Himalayas**:
- While these habitats may be less diverse due to harsh conditions, they are not necessarily threatened by human activities to the same extent as habitat destruction.

3. **Fragile Ecosystems such as Mangroves and Wetlands**:
- Although these ecosystems are vulnerable, they are also known for their high productivity and biodiversity. The threat level is significant, but they are not as broadly impactful as habitat destruction.

4. **Creation of Biosphere Reserves**:
- Biosphere reserves are designed to protect biodiversity and promote conservation efforts. They do not threaten biodiversity; rather, they aim to enhance it.

### Step 3: Conclusion
After evaluating all options, the strongest threat to biodiversity is the **Destruction of Natural Habitat, Vegetation, and Shifting Cultivation**. This option directly leads to loss of species and degradation of ecosystems.

### Final Answer
**The option that strongly threatens biodiversity is: Destruction of Natural Habitat, Vegetation, and Shifting Cultivation.**

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