. Conservation within the natural habitats isa) In-situ conservation b) Ex-situ conservationc) In-vivo conservation d) Ex-vivo conservation154.

The question pertains to types of conservation methods within natural habitats.

Explanation

1. In-situ conservation refers to the conservation of species in their natural habitats. This method focuses on protecting the ecological processes and the organisms that inhabit those environments.
2. Ex-situ conservation, on the other hand, involves the preservation of components of biological diversity outside their natural habitats. This can include botanical gardens, seed banks, and wildlife reserves.
3. In-vivo conservation is a term often used interchangeably with in-situ conservation, emphasizing the conservation of living species in their natural environments.
4. Ex-vivo conservation typically refers to the preservation of biodiversity components outside of their natural habitats but can also focus on techniques in laboratories or controlled environments.

Conclusion

In the context of conserving species specifically within their natural habitats, the correct answer is a) In-situ conservation. This method is key for maintaining biodiversity and ecological processes in the wild.