Which is the best way to describe the biodiversity of an area?

Biodiversity is the variability among living organisms from all sources, including terrestrial, marine, and other aquatic ecosystems and the ecological complexes of which they are part; this includes diversity within species, between species, and of ecosystems.

Biodiversity is the different population organisms present in a certain area. It is the variety of life forms.

Explanation:

Biodiversity means a variety of life forms present on earth. It is the number of different species living in an area. There are so many varieties of life on earth. They are found in different environments such as in the land, water, and in the air also. They form different animal groups such as animal kingdom, plant kingdom, and the microbial life. For example, in a pond, there is several frogs and fishes are living and they form fish populations, frog population, etc. This different population in an area forms the biodiversity. Each organism of biodiversity is important because they maintain the balance of the environment.