Habitat destruction includes

Options

A. conversion of natural wet lands into crop lands
B. erosion of barriers
C. wide spread introduction of exotic species
D. all the three

Answer

**Step-by-Step Solution:**

1. **Understanding Habitat Destruction**: Habitat destruction refers to the process of altering or degrading a natural habitat, which can negatively impact the species that live there. This can occur due to human activities or natural events.

2. **Identifying Examples of Habitat Destruction**:
- **Conversion of Natural Wetlands into Cropland**: This involves transforming wetlands, which are crucial ecosystems, into agricultural land. While it may increase food production, it disrupts the natural habitat and biodiversity.
- **Erosion of Barriers**: Erosion is a natural process that can lead to habitat destruction. It can change the landscape and affect the organisms that depend on specific habitats for survival.
- **Widespread Introduction of Exotic Species**: Introducing non-native species can disrupt local ecosystems. These species may outcompete native species for resources, leading to declines in native populations and altering the habitat.

3. **Conclusion**: All the mentioned activities—conversion of wetlands, erosion of barriers, and introduction of exotic species—are forms of habitat destruction. They can lead to significant ecological changes and loss of biodiversity.

**Final Answer**: Habitat destruction includes:
- Conversion of natural wetlands into cropland
- Erosion of barriers
- Widespread introduction of exotic species

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