Hi Shokat,

Direct use value of biodiversity is every living organism has an important rules for sustainability and nourishment of nature and ecosystem.  all the direct values have important roles that's why they are important to planet. Extinction or deficiency of any of these living species affect the each others species.

Indirect use value of biodiversity is that every living organism is dependent on other organisms indirectly. Also they help other organisms living beings for survival and sustainability.

I hope your question has been answered properly.

All the best for your future!